You are a helpful assistant. The assistant first thinks about the reasoning process in the mind and then provides the user with the answer. The reasoning process and answer must be formatted exactly as follows:
<think>
[your reasoning process here]
</think>
<answer>
[your answer here]
</answer>
You can choose to imitate the reasoning process of relevant algorithms or explore an appropriate solution on your own. DO NOT use code, and remember to focus on the logical flow.
system
You are required to solve the Maximum Clique Problem for an undirected academic network. In this network, nodes represent authors and edges represent research collaborations. Your objective is to find the largest subset of nodes such that every pair of vertices in this subset is connected by an edge.

**Problem to Solve**

- Authors in the network: Naohiko Irie, Masayoshi Mase, Yasutaka Wada, Motoki Obata, Atsushi Hasegawa, Shumpei Kitaki, Takeshi Masuura, Toshihiro Hattori, Jun Shirako, Masashi Takada, Keiji Kimura, Hironori Kasahara, Kiyoshi Hayase
- Research collaborations between these authors: Naohiko Irie and Keiji Kimura, Naohiko Irie and Hironori Kasahara, Naohiko Irie and Jun Shirako, Naohiko Irie and Atsushi Hasegawa, Naohiko Irie and Toshihiro Hattori, Masayoshi Mase and Keiji Kimura, Masayoshi Mase and Hironori Kasahara, Masayoshi Mase and Yasutaka Wada, Masayoshi Mase and Jun Shirako, Masayoshi Mase and Motoki Obata, Masayoshi Mase and Masashi Takada, Masayoshi Mase and Atsushi Hasegawa, Masayoshi Mase and Toshihiro Hattori, Masayoshi Mase and Kiyoshi Hayase, Yasutaka Wada and Jun Shirako, Yasutaka Wada and Keiji Kimura, Yasutaka Wada and Hironori Kasahara, Yasutaka Wada and Motoki Obata, Yasutaka Wada and Masashi Takada, Yasutaka Wada and Atsushi Hasegawa, Yasutaka Wada and Toshihiro Hattori, Yasutaka Wada and Kiyoshi Hayase, Motoki Obata and Jun Shirako, Motoki Obata and Keiji Kimura, Motoki Obata and Hironori Kasahara, Atsushi Hasegawa and Jun Shirako, Atsushi Hasegawa and Keiji Kimura, Atsushi Hasegawa and Hironori Kasahara, Atsushi Hasegawa and Toshihiro Hattori, Shumpei Kitaki and Jun Shirako, Shumpei Kitaki and Keiji Kimura, Shumpei Kitaki and Hironori Kasahara, Takeshi Masuura and Jun Shirako, Takeshi Masuura and Keiji Kimura, Takeshi Masuura and Hironori Kasahara, Toshihiro Hattori and Jun Shirako, Toshihiro Hattori and Keiji Kimura, Toshihiro Hattori and Hironori Kasahara, Toshihiro Hattori and Masashi Takada, Toshihiro Hattori and Kiyoshi Hayase, Jun Shirako and Keiji Kimura, Jun Shirako and Hironori Kasahara, Jun Shirako and Masashi Takada, Jun Shirako and Kiyoshi Hayase, Masashi Takada and Keiji Kimura, Masashi Takada and Hironori Kasahara, Keiji Kimura and Hironori Kasahara, Keiji Kimura and Kiyoshi Hayase, Hironori Kasahara and Kiyoshi Hayase.
Identify the clique with the maximum number of authors in this network. Present your answer in the following format: [AuthorA, AuthorB, AuthorC, AuthorD, ...].
user
{"directed": false, "multigraph": false, "graph": {}, "nodes": [{"name": "Naohiko Irie", "id": 519556}, {"name": "Atsushi Hasegawa", "id": 399270}, {"name": "Motoki Obata", "id": 54727}, {"name": "Masayoshi Mase", "id": 268646}, {"name": "Yasutaka Wada", "id": 23015}, {"name": "Shumpei Kitaki", "id": 1187083}, {"name": "Takeshi Masuura", "id": 91664}, {"name": "Toshihiro Hattori", "id": 445298}, {"name": "Jun Shirako", "id": 29651}, {"name": "Masashi Takada", "id": 245303}, {"name": "Keiji Kimura", "id": 29656}, {"name": "Hironori Kasahara", "id": 29657}, {"name": "Kiyoshi Hayase", "id": 648542}], "links": [{"source": 519556, "target": 29656}, {"source": 519556, "target": 29657}, {"source": 519556, "target": 29651}, {"source": 519556, "target": 399270}, {"source": 519556, "target": 445298}, {"source": 399270, "target": 23015}, {"source": 399270, "target": 29651}, {"source": 399270, "target": 29656}, {"source": 399270, "target": 29657}, {"source": 399270, "target": 268646}, {"source": 399270, "target": 445298}, {"source": 54727, "target": 23015}, {"source": 54727, "target": 29651}, {"source": 54727, "target": 29656}, {"source": 54727, "target": 29657}, {"source": 54727, "target": 268646}, {"source": 268646, "target": 29656}, {"source": 268646, "target": 29657}, {"source": 268646, "target": 23015}, {"source": 268646, "target": 29651}, {"source": 268646, "target": 245303}, {"source": 268646, "target": 445298}, {"source": 268646, "target": 648542}, {"source": 23015, "target": 29651}, {"source": 23015, "target": 29656}, {"source": 23015, "target": 29657}, {"source": 23015, "target": 245303}, {"source": 23015, "target": 445298}, {"source": 23015, "target": 648542}, {"source": 1187083, "target": 29651}, {"source": 1187083, "target": 29656}, {"source": 1187083, "target": 29657}, {"source": 91664, "target": 29651}, {"source": 91664, "target": 29656}, {"source": 91664, "target": 29657}, {"source": 445298, "target": 29651}, {"source": 445298, "target": 29656}, {"source": 445298, "target": 29657}, {"source": 445298, "target": 245303}, {"source": 445298, "target": 648542}, {"source": 29651, "target": 29656}, {"source": 29651, "target": 29657}, {"source": 29651, "target": 245303}, {"source": 29651, "target": 648542}, {"source": 245303, "target": 29656}, {"source": 245303, "target": 29657}, {"source": 29656, "target": 29657}, {"source": 29656, "target": 648542}, {"source": 29657, "target": 648542}]}
You are required to solve the Maximum Clique Problem for an undirected academic network. In this network, nodes represent authors and edges represent research collaborations. Your objective is to find the largest subset of nodes such that every pair of vertices in this subset is connected by an edge.

**Problem to Solve**

- Authors in the network: Naohiko Irie, Masayoshi Mase, Yasutaka Wada, Motoki Obata, Atsushi Hasegawa, Shumpei Kitaki, Takeshi Masuura, Toshihiro Hattori, Jun Shirako, Masashi Takada, Keiji Kimura, Hironori Kasahara, Kiyoshi Hayase
- Research collaborations between these authors: Naohiko Irie and Keiji Kimura, Naohiko Irie and Hironori Kasahara, Naohiko Irie and Jun Shirako, Naohiko Irie and Atsushi Hasegawa, Naohiko Irie and Toshihiro Hattori, Masayoshi Mase and Keiji Kimura, Masayoshi Mase and Hironori Kasahara, Masayoshi Mase and Yasutaka Wada, Masayoshi Mase and Jun Shirako, Masayoshi Mase and Motoki Obata, Masayoshi Mase and Masashi Takada, Masayoshi Mase and Atsushi Hasegawa, Masayoshi Mase and Toshihiro Hattori, Masayoshi Mase and Kiyoshi Hayase, Yasutaka Wada and Jun Shirako, Yasutaka Wada and Keiji Kimura, Yasutaka Wada and Hironori Kasahara, Yasutaka Wada and Motoki Obata, Yasutaka Wada and Masashi Takada, Yasutaka Wada and Atsushi Hasegawa, Yasutaka Wada and Toshihiro Hattori, Yasutaka Wada and Kiyoshi Hayase, Motoki Obata and Jun Shirako, Motoki Obata and Keiji Kimura, Motoki Obata and Hironori Kasahara, Atsushi Hasegawa and Jun Shirako, Atsushi Hasegawa and Keiji Kimura, Atsushi Hasegawa and Hironori Kasahara, Atsushi Hasegawa and Toshihiro Hattori, Shumpei Kitaki and Jun Shirako, Shumpei Kitaki and Keiji Kimura, Shumpei Kitaki and Hironori Kasahara, Takeshi Masuura and Jun Shirako, Takeshi Masuura and Keiji Kimura, Takeshi Masuura and Hironori Kasahara, Toshihiro Hattori and Jun Shirako, Toshihiro Hattori and Keiji Kimura, Toshihiro Hattori and Hironori Kasahara, Toshihiro Hattori and Masashi Takada, Toshihiro Hattori and Kiyoshi Hayase, Jun Shirako and Keiji Kimura, Jun Shirako and Hironori Kasahara, Jun Shirako and Masashi Takada, Jun Shirako and Kiyoshi Hayase, Masashi Takada and Keiji Kimura, Masashi Takada and Hironori Kasahara, Keiji Kimura and Hironori Kasahara, Keiji Kimura and Kiyoshi Hayase, Hironori Kasahara and Kiyoshi Hayase.
Identify the clique with the maximum number of authors in this network. Present your answer in the following format: [AuthorA, AuthorB, AuthorC, AuthorD, ...].
test