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 Minimum Vertex Cover 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 smallest subset of users such that every friendship connection has at least one user from this subset.

**Problem to Solve**

- Users in the network: Mary Hawkins, Shelly Ryan, Jonathan Schwartz, Jessica Thompson, Maria Evans, April Adams, Jacob Olsen, Ashley Cooper, Alison Lloyd, Gregory King, Mary Garza, James Hernandez, Tracy Russell, Ronald Walsh, Jason Jones.
- Fiendship connections: Mary Hawkins and Jonathan Schwartz, Mary Hawkins and Maria Evans, Mary Hawkins and James Hernandez, Mary Hawkins and Jason Jones, Mary Hawkins and Tracy Russell, Mary Hawkins and Shelly Ryan, Mary Hawkins and Jessica Thompson, Mary Hawkins and Ashley Cooper, Mary Hawkins and Jacob Olsen, Mary Hawkins and April Adams, Jonathan Schwartz and James Hernandez, Jonathan Schwartz and Ronald Walsh, Jonathan Schwartz and Mary Garza, Jonathan Schwartz and Alison Lloyd, Alison Lloyd and James Hernandez, Alison Lloyd and Tracy Russell, Gregory King and James Hernandez, Mary Garza and James Hernandez, Mary Garza and Tracy Russell, James Hernandez and Ronald Walsh, James Hernandez and Tracy Russell.
Identify the Minimum Vertex Cover of this network and present your answer in the following format: [UserA, UserB, UserC, UserD, ...].
user
{"directed": false, "multigraph": false, "graph": {}, "nodes": [{"name": "Mary Hawkins", "id": 2486757}, {"name": "Shelly Ryan", "id": 4688074}, {"name": "Jessica Thompson", "id": 4688075}, {"name": "Jonathan Schwartz", "id": 2404650}, {"name": "Maria Evans", "id": 2480717}, {"name": "April Adams", "id": 4688078}, {"name": "Jacob Olsen", "id": 4688077}, {"name": "Ashley Cooper", "id": 4688076}, {"name": "Alison Lloyd", "id": 2486767}, {"name": "Gregory King", "id": 4687921}, {"name": "Mary Garza", "id": 2486763}, {"name": "James Hernandez", "id": 2486744}, {"name": "Tracy Russell", "id": 3541081}, {"name": "Ronald Walsh", "id": 2486747}, {"name": "Jason Jones", "id": 2502143}], "links": [{"source": 2486757, "target": 2404650}, {"source": 2486757, "target": 2480717}, {"source": 2486757, "target": 2486744}, {"source": 2486757, "target": 2502143}, {"source": 2486757, "target": 3541081}, {"source": 2486757, "target": 4688074}, {"source": 2486757, "target": 4688075}, {"source": 2486757, "target": 4688076}, {"source": 2486757, "target": 4688077}, {"source": 2486757, "target": 4688078}, {"source": 2404650, "target": 2486744}, {"source": 2404650, "target": 2486747}, {"source": 2404650, "target": 2486763}, {"source": 2404650, "target": 2486767}, {"source": 2486767, "target": 2486744}, {"source": 2486767, "target": 3541081}, {"source": 4687921, "target": 2486744}, {"source": 2486763, "target": 2486744}, {"source": 2486763, "target": 3541081}, {"source": 2486744, "target": 2486747}, {"source": 2486744, "target": 3541081}]}
Your task is to solve the Minimum Vertex Cover 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 smallest subset of users such that every friendship connection has at least one user from this subset.

**Problem to Solve**

- Users in the network: Mary Hawkins, Shelly Ryan, Jonathan Schwartz, Jessica Thompson, Maria Evans, April Adams, Jacob Olsen, Ashley Cooper, Alison Lloyd, Gregory King, Mary Garza, James Hernandez, Tracy Russell, Ronald Walsh, Jason Jones.
- Fiendship connections: Mary Hawkins and Jonathan Schwartz, Mary Hawkins and Maria Evans, Mary Hawkins and James Hernandez, Mary Hawkins and Jason Jones, Mary Hawkins and Tracy Russell, Mary Hawkins and Shelly Ryan, Mary Hawkins and Jessica Thompson, Mary Hawkins and Ashley Cooper, Mary Hawkins and Jacob Olsen, Mary Hawkins and April Adams, Jonathan Schwartz and James Hernandez, Jonathan Schwartz and Ronald Walsh, Jonathan Schwartz and Mary Garza, Jonathan Schwartz and Alison Lloyd, Alison Lloyd and James Hernandez, Alison Lloyd and Tracy Russell, Gregory King and James Hernandez, Mary Garza and James Hernandez, Mary Garza and Tracy Russell, James Hernandez and Ronald Walsh, James Hernandez and Tracy Russell.
Identify the Minimum Vertex Cover of this network and present your answer in the following format: [UserA, UserB, UserC, UserD, ...].
test