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: Emily Phillips MD, David Gaines, Terry Lozano, Ryan Wilcox, David Ayala Jr., Brian Mckinney, Mark Carr, Chelsea Graham, Danny Cooke, David Wolf, Rachel Nelson, Vicki Richardson.
- Fiendship connections: Emily Phillips MD and Rachel Nelson, David Gaines and Danny Cooke, Terry Lozano and Danny Cooke, Ryan Wilcox and Rachel Nelson, David Ayala Jr. and Danny Cooke, Brian Mckinney and Danny Cooke, Mark Carr and Danny Cooke, Chelsea Graham and Danny Cooke, Danny Cooke and Vicki Richardson, Danny Cooke and David Wolf, David Wolf and Rachel Nelson.
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": "Emily Phillips MD", "id": 197249}, {"name": "David Gaines", "id": 372357}, {"name": "Terry Lozano", "id": 477257}, {"name": "Ryan Wilcox", "id": 443754}, {"name": "David Ayala Jr.", "id": 477259}, {"name": "Brian Mckinney", "id": 477260}, {"name": "Mark Carr", "id": 477261}, {"name": "Chelsea Graham", "id": 477264}, {"name": "Danny Cooke", "id": 444084}, {"name": "David Wolf", "id": 444085}, {"name": "Rachel Nelson", "id": 164084}, {"name": "Vicki Richardson", "id": 273972}], "links": [{"source": 197249, "target": 164084}, {"source": 372357, "target": 444084}, {"source": 477257, "target": 444084}, {"source": 443754, "target": 164084}, {"source": 477259, "target": 444084}, {"source": 477260, "target": 444084}, {"source": 477261, "target": 444084}, {"source": 477264, "target": 444084}, {"source": 444084, "target": 273972}, {"source": 444084, "target": 444085}, {"source": 444085, "target": 164084}]}
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: Emily Phillips MD, David Gaines, Terry Lozano, Ryan Wilcox, David Ayala Jr., Brian Mckinney, Mark Carr, Chelsea Graham, Danny Cooke, David Wolf, Rachel Nelson, Vicki Richardson.
- Fiendship connections: Emily Phillips MD and Rachel Nelson, David Gaines and Danny Cooke, Terry Lozano and Danny Cooke, Ryan Wilcox and Rachel Nelson, David Ayala Jr. and Danny Cooke, Brian Mckinney and Danny Cooke, Mark Carr and Danny Cooke, Chelsea Graham and Danny Cooke, Danny Cooke and Vicki Richardson, Danny Cooke and David Wolf, David Wolf and Rachel Nelson.
Identify the Maximum Independent Set of this network and present your answer in the following format: [UserA, UserB, UserC, UserD, ...].
test