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
You are required to identify all connected components in the given social network and output one representative node from each component.
Within a connected component, any node can be reached from any other node through the edges in the graph. Different connected components are isolated from each other.

**Problem to Solve**

- Names in the network: Katelyn Holmes, Adam Johnson, Julie Jacobson DVM, Charles Rice, David Lopez, Courtney Kennedy, Kathy Johnson, Erica Key, Joshua Cook, Ashley Brady, Dustin Myers, Shelby Stone, Stephen Mullen, Richard Marshall, Jennifer Rodriguez, Jennifer Kim
- Fiendship connections: Katelyn Holmes to Julie Jacobson DVM, Katelyn Holmes to Erica Key, Adam Johnson to Jennifer Kim, Julie Jacobson DVM to Dustin Myers, Julie Jacobson DVM to Stephen Mullen, Julie Jacobson DVM to Joshua Cook, Charles Rice to Courtney Kennedy, Charles Rice to David Lopez, David Lopez to Jennifer Rodriguez, David Lopez to Jennifer Kim, David Lopez to Shelby Stone, David Lopez to Ashley Brady, Courtney Kennedy to Kathy Johnson, Ashley Brady to Richard Marshall, Richard Marshall to Jennifer Rodriguez
Identify all connected components in this network. Note that for each connected component, you should only output one of its nodes.
Present your answer in the following format: [UserA, UserB, UserC, UserD, ...]
user
{"directed": false, "multigraph": false, "graph": {}, "nodes": [{"name": "Katelyn Holmes", "id": 781093}, {"name": "Adam Johnson", "id": 966629}, {"name": "Julie Jacobson DVM", "id": 1342250}, {"name": "Charles Rice", "id": 2163819}, {"name": "David Lopez", "id": 1117644}, {"name": "Courtney Kennedy", "id": 1102443}, {"name": "Kathy Johnson", "id": 1615819}, {"name": "Erica Key", "id": 1342252}, {"name": "Joshua Cook", "id": 1680721}, {"name": "Ashley Brady", "id": 2141747}, {"name": "Dustin Myers", "id": 1207859}, {"name": "Shelby Stone", "id": 1214965}, {"name": "Stephen Mullen", "id": 1397494}, {"name": "Richard Marshall", "id": 1087765}, {"name": "Jennifer Rodriguez", "id": 794426}, {"name": "Jennifer Kim", "id": 1489150}], "links": [{"source": 781093, "target": 1342250}, {"source": 781093, "target": 1342252}, {"source": 966629, "target": 1489150}, {"source": 1342250, "target": 1207859}, {"source": 1342250, "target": 1397494}, {"source": 1342250, "target": 1680721}, {"source": 2163819, "target": 1102443}, {"source": 2163819, "target": 1117644}, {"source": 1117644, "target": 794426}, {"source": 1117644, "target": 1489150}, {"source": 1117644, "target": 1214965}, {"source": 1117644, "target": 2141747}, {"source": 1102443, "target": 1615819}, {"source": 2141747, "target": 1087765}, {"source": 1087765, "target": 794426}]}
You are required to identify all connected components in the given social network and output one representative node from each component.
Within a connected component, any node can be reached from any other node through the edges in the graph. Different connected components are isolated from each other.

**Problem to Solve**

- Names in the network: Katelyn Holmes, Adam Johnson, Julie Jacobson DVM, Charles Rice, David Lopez, Courtney Kennedy, Kathy Johnson, Erica Key, Joshua Cook, Ashley Brady, Dustin Myers, Shelby Stone, Stephen Mullen, Richard Marshall, Jennifer Rodriguez, Jennifer Kim
- Fiendship connections: Katelyn Holmes to Julie Jacobson DVM, Katelyn Holmes to Erica Key, Adam Johnson to Jennifer Kim, Julie Jacobson DVM to Dustin Myers, Julie Jacobson DVM to Stephen Mullen, Julie Jacobson DVM to Joshua Cook, Charles Rice to Courtney Kennedy, Charles Rice to David Lopez, David Lopez to Jennifer Rodriguez, David Lopez to Jennifer Kim, David Lopez to Shelby Stone, David Lopez to Ashley Brady, Courtney Kennedy to Kathy Johnson, Ashley Brady to Richard Marshall, Richard Marshall to Jennifer Rodriguez
Identify all connected components in this network. Note that for each connected component, you should only output one of its nodes.
Present your answer in the following format: [UserA, UserB, UserC, UserD, ...]
test