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
Your task is to solve the Maximum Independent Set problem in the given social network. In this network, each node represents a user, and each edge represents a friendship connection. You need to identify the largest subset of users such that no two users in this subset are friends connected by an edge. 

**Problem to Solve**

- Users in the network: Ryan Blankenship, Jessica Bentley, Tina Bailey, Rebecca Gross, Jessica Hanson, Stephen Lynn, Alejandro Monroe, Samuel Harper, Linda Bailey, Veronica Wilson, Tracy Kelly, Gabrielle Nguyen, Mark Hall, Ashley Martin, Joseph Cohen, Lisa Long, Patricia Daniels, Joshua Kane, Joshua Ramos, Mark Pittman.
- Fiendship connections: Ryan Blankenship and Samuel Harper, Jessica Bentley and Samuel Harper, Tina Bailey and Alejandro Monroe, Tina Bailey and Samuel Harper, Rebecca Gross and Samuel Harper, Jessica Hanson and Joshua Kane, Jessica Hanson and Samuel Harper, Stephen Lynn and Samuel Harper, Samuel Harper and Joseph Cohen, Samuel Harper and Linda Bailey, Samuel Harper and Mark Pittman, Samuel Harper and Lisa Long, Samuel Harper and Patricia Daniels, Samuel Harper and Joshua Ramos, Samuel Harper and Veronica Wilson, Samuel Harper and Tracy Kelly, Samuel Harper and Gabrielle Nguyen, Samuel Harper and Mark Hall, Samuel Harper and Ashley Martin, Patricia Daniels and Joshua Kane, Joshua Kane and Joshua Ramos.
Identify the Maximum Independent Set of this network and present your answer in the following format: [UserA, UserB, UserC, UserD, ...].
user
{"directed": false, "multigraph": false, "graph": {}, "nodes": [{"name": "Ryan Blankenship", "id": 351499}, {"name": "Jessica Bentley", "id": 280078}, {"name": "Tina Bailey", "id": 568472}, {"name": "Rebecca Gross", "id": 187675}, {"name": "Jessica Hanson", "id": 273824}, {"name": "Stephen Lynn", "id": 21795}, {"name": "Alejandro Monroe", "id": 811}, {"name": "Samuel Harper", "id": 180537}, {"name": "Linda Bailey", "id": 63421}, {"name": "Veronica Wilson", "id": 767183}, {"name": "Tracy Kelly", "id": 767184}, {"name": "Gabrielle Nguyen", "id": 767185}, {"name": "Mark Hall", "id": 767187}, {"name": "Ashley Martin", "id": 767188}, {"name": "Joseph Cohen", "id": 32214}, {"name": "Lisa Long", "id": 310240}, {"name": "Patricia Daniels", "id": 411360}, {"name": "Joshua Kane", "id": 1002}, {"name": "Joshua Ramos", "id": 372729}, {"name": "Mark Pittman", "id": 163323}], "links": [{"source": 351499, "target": 180537}, {"source": 280078, "target": 180537}, {"source": 568472, "target": 811}, {"source": 568472, "target": 180537}, {"source": 187675, "target": 180537}, {"source": 273824, "target": 1002}, {"source": 273824, "target": 180537}, {"source": 21795, "target": 180537}, {"source": 180537, "target": 32214}, {"source": 180537, "target": 63421}, {"source": 180537, "target": 163323}, {"source": 180537, "target": 310240}, {"source": 180537, "target": 411360}, {"source": 180537, "target": 372729}, {"source": 180537, "target": 767183}, {"source": 180537, "target": 767184}, {"source": 180537, "target": 767185}, {"source": 180537, "target": 767187}, {"source": 180537, "target": 767188}, {"source": 411360, "target": 1002}, {"source": 1002, "target": 372729}]}
Your task is to solve the Maximum Independent Set problem in the given social network. In this network, each node represents a user, and each edge represents a friendship connection. You need to identify the largest subset of users such that no two users in this subset are friends connected by an edge. 

**Problem to Solve**

- Users in the network: Ryan Blankenship, Jessica Bentley, Tina Bailey, Rebecca Gross, Jessica Hanson, Stephen Lynn, Alejandro Monroe, Samuel Harper, Linda Bailey, Veronica Wilson, Tracy Kelly, Gabrielle Nguyen, Mark Hall, Ashley Martin, Joseph Cohen, Lisa Long, Patricia Daniels, Joshua Kane, Joshua Ramos, Mark Pittman.
- Fiendship connections: Ryan Blankenship and Samuel Harper, Jessica Bentley and Samuel Harper, Tina Bailey and Alejandro Monroe, Tina Bailey and Samuel Harper, Rebecca Gross and Samuel Harper, Jessica Hanson and Joshua Kane, Jessica Hanson and Samuel Harper, Stephen Lynn and Samuel Harper, Samuel Harper and Joseph Cohen, Samuel Harper and Linda Bailey, Samuel Harper and Mark Pittman, Samuel Harper and Lisa Long, Samuel Harper and Patricia Daniels, Samuel Harper and Joshua Ramos, Samuel Harper and Veronica Wilson, Samuel Harper and Tracy Kelly, Samuel Harper and Gabrielle Nguyen, Samuel Harper and Mark Hall, Samuel Harper and Ashley Martin, Patricia Daniels and Joshua Kane, Joshua Kane and Joshua Ramos.
Identify the Maximum Independent Set of this network and present your answer in the following format: [UserA, UserB, UserC, UserD, ...].
test