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: Ashley Cook, Derek Caldwell, Toni Johnston, Angela Perry, James Moore, Kathleen Glover, Dan Johnson, Christopher White, Henry Robinson, Shaun Bailey, Eric Moore, Christopher Rowland, Rhonda Bowman, Sabrina Alvarado, Linda Odonnell, Sean Chambers, Rebecca Fields, Jonathan Jordan, Abigail Stone, Gregory Rodriguez, Andrew Henderson, Zachary Guzman, Richard Wright, Jeremy Barrett, Lauren Cole, Sandra Ball.
- Fiendship connections: Ashley Cook and Toni Johnston, Derek Caldwell and Richard Wright, Toni Johnston and Angela Perry, Toni Johnston and Richard Wright, Toni Johnston and James Moore, Toni Johnston and Kathleen Glover, Angela Perry and James Moore, Angela Perry and Kathleen Glover, Angela Perry and Dan Johnson, Angela Perry and Christopher White, Angela Perry and Shaun Bailey, Angela Perry and Eric Moore, Angela Perry and Rhonda Bowman, Angela Perry and Linda Odonnell, Kathleen Glover and Zachary Guzman, Kathleen Glover and Sandra Ball, Christopher White and Jonathan Jordan, Henry Robinson and Richard Wright, Eric Moore and Andrew Henderson, Christopher Rowland and Richard Wright, Sabrina Alvarado and Richard Wright, Sean Chambers and Rebecca Fields, Rebecca Fields and Sandra Ball, Abigail Stone and Jeremy Barrett, Gregory Rodriguez and Zachary Guzman, Richard Wright and Jeremy Barrett, Lauren Cole and Sandra Ball.
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": "Ashley Cook", "id": 282113}, {"name": "Derek Caldwell", "id": 91905}, {"name": "Toni Johnston", "id": 135811}, {"name": "Angela Perry", "id": 135812}, {"name": "James Moore", "id": 135813}, {"name": "Kathleen Glover", "id": 135814}, {"name": "Dan Johnson", "id": 135815}, {"name": "Christopher White", "id": 135816}, {"name": "Henry Robinson", "id": 329605}, {"name": "Shaun Bailey", "id": 135818}, {"name": "Eric Moore", "id": 135819}, {"name": "Christopher Rowland", "id": 329603}, {"name": "Rhonda Bowman", "id": 135820}, {"name": "Sabrina Alvarado", "id": 329607}, {"name": "Linda Odonnell", "id": 135821}, {"name": "Sean Chambers", "id": 79893}, {"name": "Rebecca Fields", "id": 79894}, {"name": "Jonathan Jordan", "id": 493720}, {"name": "Abigail Stone", "id": 50462}, {"name": "Gregory Rodriguez", "id": 149960}, {"name": "Andrew Henderson", "id": 267852}, {"name": "Zachary Guzman", "id": 466263}, {"name": "Richard Wright", "id": 200666}, {"name": "Jeremy Barrett", "id": 329606}, {"name": "Lauren Cole", "id": 434018}, {"name": "Sandra Ball", "id": 479471}], "links": [{"source": 282113, "target": 135811}, {"source": 91905, "target": 200666}, {"source": 135811, "target": 135812}, {"source": 135811, "target": 200666}, {"source": 135811, "target": 135813}, {"source": 135811, "target": 135814}, {"source": 135812, "target": 135813}, {"source": 135812, "target": 135814}, {"source": 135812, "target": 135815}, {"source": 135812, "target": 135816}, {"source": 135812, "target": 135818}, {"source": 135812, "target": 135819}, {"source": 135812, "target": 135820}, {"source": 135812, "target": 135821}, {"source": 135814, "target": 466263}, {"source": 135814, "target": 479471}, {"source": 135816, "target": 493720}, {"source": 329605, "target": 200666}, {"source": 135819, "target": 267852}, {"source": 329603, "target": 200666}, {"source": 329607, "target": 200666}, {"source": 79893, "target": 79894}, {"source": 79894, "target": 479471}, {"source": 50462, "target": 329606}, {"source": 149960, "target": 466263}, {"source": 200666, "target": 329606}, {"source": 434018, "target": 479471}]}
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: Ashley Cook, Derek Caldwell, Toni Johnston, Angela Perry, James Moore, Kathleen Glover, Dan Johnson, Christopher White, Henry Robinson, Shaun Bailey, Eric Moore, Christopher Rowland, Rhonda Bowman, Sabrina Alvarado, Linda Odonnell, Sean Chambers, Rebecca Fields, Jonathan Jordan, Abigail Stone, Gregory Rodriguez, Andrew Henderson, Zachary Guzman, Richard Wright, Jeremy Barrett, Lauren Cole, Sandra Ball.
- Fiendship connections: Ashley Cook and Toni Johnston, Derek Caldwell and Richard Wright, Toni Johnston and Angela Perry, Toni Johnston and Richard Wright, Toni Johnston and James Moore, Toni Johnston and Kathleen Glover, Angela Perry and James Moore, Angela Perry and Kathleen Glover, Angela Perry and Dan Johnson, Angela Perry and Christopher White, Angela Perry and Shaun Bailey, Angela Perry and Eric Moore, Angela Perry and Rhonda Bowman, Angela Perry and Linda Odonnell, Kathleen Glover and Zachary Guzman, Kathleen Glover and Sandra Ball, Christopher White and Jonathan Jordan, Henry Robinson and Richard Wright, Eric Moore and Andrew Henderson, Christopher Rowland and Richard Wright, Sabrina Alvarado and Richard Wright, Sean Chambers and Rebecca Fields, Rebecca Fields and Sandra Ball, Abigail Stone and Jeremy Barrett, Gregory Rodriguez and Zachary Guzman, Richard Wright and Jeremy Barrett, Lauren Cole and Sandra Ball.
Identify the Maximum Independent Set of this network and present your answer in the following format: [UserA, UserB, UserC, UserD, ...].
test