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: Lauren Shaffer, Roger Martin, Dave Gomez, Vincent Stone, Margaret Bell, Deanna Reed, Danny Ortiz, Ruth Hill, Christopher Collier, Brandi Lee, Kyle Hays, David Johnson, Billy Jenkins, Luke Mcclain, William Moody, Luke Reyes.
- Fiendship connections: Lauren Shaffer and David Johnson, Roger Martin and Christopher Collier, Roger Martin and Danny Ortiz, Dave Gomez and Christopher Collier, Vincent Stone and Christopher Collier, Margaret Bell and Ruth Hill, Margaret Bell and Christopher Collier, Deanna Reed and Christopher Collier, Danny Ortiz and David Johnson, Christopher Collier and Kyle Hays, Christopher Collier and William Moody, Christopher Collier and Billy Jenkins, Christopher Collier and Brandi Lee, Christopher Collier and Luke Reyes, Christopher Collier and David Johnson, Brandi Lee and Luke Mcclain, Luke Mcclain and Luke Reyes.
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": "Lauren Shaffer", "id": 50912}, {"name": "Dave Gomez", "id": 226018}, {"name": "Vincent Stone", "id": 226019}, {"name": "Margaret Bell", "id": 226020}, {"name": "Deanna Reed", "id": 226021}, {"name": "Danny Ortiz", "id": 17251}, {"name": "Ruth Hill", "id": 48839}, {"name": "Christopher Collier", "id": 156589}, {"name": "Brandi Lee", "id": 132782}, {"name": "Kyle Hays", "id": 655}, {"name": "David Johnson", "id": 179632}, {"name": "Billy Jenkins", "id": 44019}, {"name": "Luke Mcclain", "id": 156596}, {"name": "Luke Reyes", "id": 217658}, {"name": "William Moody", "id": 20055}, {"name": "Roger Martin", "id": 2010}], "links": [{"source": 50912, "target": 179632}, {"source": 226018, "target": 156589}, {"source": 226019, "target": 156589}, {"source": 226020, "target": 48839}, {"source": 226020, "target": 156589}, {"source": 226021, "target": 156589}, {"source": 17251, "target": 2010}, {"source": 17251, "target": 179632}, {"source": 156589, "target": 655}, {"source": 156589, "target": 2010}, {"source": 156589, "target": 20055}, {"source": 156589, "target": 44019}, {"source": 156589, "target": 132782}, {"source": 156589, "target": 217658}, {"source": 156589, "target": 179632}, {"source": 132782, "target": 156596}, {"source": 156596, "target": 217658}]}
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: Lauren Shaffer, Roger Martin, Dave Gomez, Vincent Stone, Margaret Bell, Deanna Reed, Danny Ortiz, Ruth Hill, Christopher Collier, Brandi Lee, Kyle Hays, David Johnson, Billy Jenkins, Luke Mcclain, William Moody, Luke Reyes.
- Fiendship connections: Lauren Shaffer and David Johnson, Roger Martin and Christopher Collier, Roger Martin and Danny Ortiz, Dave Gomez and Christopher Collier, Vincent Stone and Christopher Collier, Margaret Bell and Ruth Hill, Margaret Bell and Christopher Collier, Deanna Reed and Christopher Collier, Danny Ortiz and David Johnson, Christopher Collier and Kyle Hays, Christopher Collier and William Moody, Christopher Collier and Billy Jenkins, Christopher Collier and Brandi Lee, Christopher Collier and Luke Reyes, Christopher Collier and David Johnson, Brandi Lee and Luke Mcclain, Luke Mcclain and Luke Reyes.
Identify the Maximum Independent Set of this network and present your answer in the following format: [UserA, UserB, UserC, UserD, ...].
test