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: Mitchell Davila, Sabrina Gonzalez, Alice Sandoval, Christopher Drake, Elizabeth Walker, Joseph Henderson, Natasha Taylor, Amanda Hudson, Ryan Maxwell, Jaime Reeves, Susan Cabrera, Kathleen Wiley DVM, Haley Carr.
- Fiendship connections: Mitchell Davila and Joseph Henderson, Mitchell Davila and Amanda Hudson, Mitchell Davila and Elizabeth Walker, Mitchell Davila and Kathleen Wiley DVM, Sabrina Gonzalez and Jaime Reeves, Sabrina Gonzalez and Natasha Taylor, Sabrina Gonzalez and Joseph Henderson, Alice Sandoval and Ryan Maxwell, Alice Sandoval and Joseph Henderson, Alice Sandoval and Amanda Hudson, Christopher Drake and Joseph Henderson, Elizabeth Walker and Joseph Henderson, Elizabeth Walker and Amanda Hudson, Elizabeth Walker and Kathleen Wiley DVM, Joseph Henderson and Jaime Reeves, Joseph Henderson and Susan Cabrera, Joseph Henderson and Ryan Maxwell, Joseph Henderson and Natasha Taylor, Joseph Henderson and Haley Carr, Joseph Henderson and Amanda Hudson, Joseph Henderson and Kathleen Wiley DVM, Amanda Hudson and Kathleen Wiley DVM, Ryan Maxwell and Kathleen Wiley DVM.
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": "Mitchell Davila", "id": 1200930}, {"name": "Alice Sandoval", "id": 1527651}, {"name": "Sabrina Gonzalez", "id": 1451298}, {"name": "Christopher Drake", "id": 1826821}, {"name": "Elizabeth Walker", "id": 1701769}, {"name": "Joseph Henderson", "id": 1442157}, {"name": "Natasha Taylor", "id": 1224238}, {"name": "Amanda Hudson", "id": 1644047}, {"name": "Ryan Maxwell", "id": 940915}, {"name": "Jaime Reeves", "id": 782293}, {"name": "Susan Cabrera", "id": 847509}, {"name": "Kathleen Wiley DVM", "id": 1825975}, {"name": "Haley Carr", "id": 1342495}], "links": [{"source": 1200930, "target": 1442157}, {"source": 1200930, "target": 1644047}, {"source": 1200930, "target": 1701769}, {"source": 1200930, "target": 1825975}, {"source": 1527651, "target": 940915}, {"source": 1527651, "target": 1442157}, {"source": 1527651, "target": 1644047}, {"source": 1451298, "target": 782293}, {"source": 1451298, "target": 1224238}, {"source": 1451298, "target": 1442157}, {"source": 1826821, "target": 1442157}, {"source": 1701769, "target": 1442157}, {"source": 1701769, "target": 1644047}, {"source": 1701769, "target": 1825975}, {"source": 1442157, "target": 782293}, {"source": 1442157, "target": 847509}, {"source": 1442157, "target": 940915}, {"source": 1442157, "target": 1224238}, {"source": 1442157, "target": 1342495}, {"source": 1442157, "target": 1644047}, {"source": 1442157, "target": 1825975}, {"source": 1644047, "target": 1825975}, {"source": 940915, "target": 1825975}]}
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: Mitchell Davila, Sabrina Gonzalez, Alice Sandoval, Christopher Drake, Elizabeth Walker, Joseph Henderson, Natasha Taylor, Amanda Hudson, Ryan Maxwell, Jaime Reeves, Susan Cabrera, Kathleen Wiley DVM, Haley Carr.
- Fiendship connections: Mitchell Davila and Joseph Henderson, Mitchell Davila and Amanda Hudson, Mitchell Davila and Elizabeth Walker, Mitchell Davila and Kathleen Wiley DVM, Sabrina Gonzalez and Jaime Reeves, Sabrina Gonzalez and Natasha Taylor, Sabrina Gonzalez and Joseph Henderson, Alice Sandoval and Ryan Maxwell, Alice Sandoval and Joseph Henderson, Alice Sandoval and Amanda Hudson, Christopher Drake and Joseph Henderson, Elizabeth Walker and Joseph Henderson, Elizabeth Walker and Amanda Hudson, Elizabeth Walker and Kathleen Wiley DVM, Joseph Henderson and Jaime Reeves, Joseph Henderson and Susan Cabrera, Joseph Henderson and Ryan Maxwell, Joseph Henderson and Natasha Taylor, Joseph Henderson and Haley Carr, Joseph Henderson and Amanda Hudson, Joseph Henderson and Kathleen Wiley DVM, Amanda Hudson and Kathleen Wiley DVM, Ryan Maxwell and Kathleen Wiley DVM.
Identify the Minimum Vertex Cover of this network and present your answer in the following format: [UserA, UserB, UserC, UserD, ...].
test