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 calculate the diameter of an undirected knowledge graph.
The diameter of a graph is the maximum distance between any pair of nodes in the graph. To compute this, you need to find the shortest path between all pairs of nodes and then determine the maximum length of these shortest paths.

**Problem to Solve**

- Entities in this knowledge graph: Saunders-Roe, National Navy of Uruguay, Westland Wessex, Sikorsky H-34, Helicopter, Uruguayan Civil War, AgustaWestland AW109, Sikorsky Aircraft, Battle of the River Plate, Westland Helicopters, Isle of Wight
- The relationships between these entities are as follows:
 - Saunders-Roe is connected to Westland Helicopters via the relationship predecessor.
 - Saunders-Roe is connected to Isle of Wight via the relationship location.
 - National Navy of Uruguay is connected to Battle of the River Plate via the relationship http://www.w3.org/2000/01/rdf-schema#seeAlso.
 - National Navy of Uruguay is connected to Westland Wessex via the relationship aircraftHelicopter.
 - National Navy of Uruguay is connected to Uruguayan Civil War via the relationship http://www.w3.org/2000/01/rdf-schema#seeAlso.
 - Westland Wessex is connected to Helicopter via the relationship type.
 - Westland Wessex is connected to Sikorsky H-34 via the relationship predecessor.
 - Westland Wessex is connected to Westland Helicopters via the relationship manufacturer.
 - Sikorsky H-34 is connected to Sikorsky Aircraft via the relationship manufacturer.
 - Sikorsky H-34 is connected to Helicopter via the relationship type.
 - Helicopter is connected to AgustaWestland AW109 via the relationship type.
Please determine the diameter of this network and output the corresponding path in the following format: [Entity1, Entity2, ..., EntityN].
user
{"directed": false, "multigraph": false, "graph": {}, "nodes": [{"name": "Saunders-Roe", "id": 311776}, {"name": "National Navy of Uruguay", "id": 692074}, {"name": "Westland Wessex", "id": 717771}, {"name": "Sikorsky H-34", "id": 1081069}, {"name": "Helicopter", "id": 30318}, {"name": "Uruguayan Civil War", "id": 246832}, {"name": "AgustaWestland AW109", "id": 695314}, {"name": "Sikorsky Aircraft", "id": 203507}, {"name": "Battle of the River Plate", "id": 219831}, {"name": "Westland Helicopters", "id": 548441}, {"name": "Isle of Wight", "id": 16727}], "links": [{"relation": "predecessor", "source": 311776, "target": 548441}, {"relation": "location", "source": 311776, "target": 16727}, {"relation": "http://www.w3.org/2000/01/rdf-schema#seeAlso", "source": 692074, "target": 219831}, {"relation": "aircraftHelicopter", "source": 692074, "target": 717771}, {"relation": "http://www.w3.org/2000/01/rdf-schema#seeAlso", "source": 692074, "target": 246832}, {"relation": "type", "source": 717771, "target": 30318}, {"relation": "predecessor", "source": 717771, "target": 1081069}, {"relation": "manufacturer", "source": 717771, "target": 548441}, {"relation": "manufacturer", "source": 1081069, "target": 203507}, {"relation": "type", "source": 1081069, "target": 30318}, {"relation": "type", "source": 30318, "target": 695314}]}
You are required to calculate the diameter of an undirected knowledge graph.
The diameter of a graph is the maximum distance between any pair of nodes in the graph. To compute this, you need to find the shortest path between all pairs of nodes and then determine the maximum length of these shortest paths.

**Problem to Solve**

- Entities in this knowledge graph: Saunders-Roe, National Navy of Uruguay, Westland Wessex, Sikorsky H-34, Helicopter, Uruguayan Civil War, AgustaWestland AW109, Sikorsky Aircraft, Battle of the River Plate, Westland Helicopters, Isle of Wight
- The relationships between these entities are as follows:
 - Saunders-Roe is connected to Westland Helicopters via the relationship predecessor.
 - Saunders-Roe is connected to Isle of Wight via the relationship location.
 - National Navy of Uruguay is connected to Battle of the River Plate via the relationship http://www.w3.org/2000/01/rdf-schema#seeAlso.
 - National Navy of Uruguay is connected to Westland Wessex via the relationship aircraftHelicopter.
 - National Navy of Uruguay is connected to Uruguayan Civil War via the relationship http://www.w3.org/2000/01/rdf-schema#seeAlso.
 - Westland Wessex is connected to Helicopter via the relationship type.
 - Westland Wessex is connected to Sikorsky H-34 via the relationship predecessor.
 - Westland Wessex is connected to Westland Helicopters via the relationship manufacturer.
 - Sikorsky H-34 is connected to Sikorsky Aircraft via the relationship manufacturer.
 - Sikorsky H-34 is connected to Helicopter via the relationship type.
 - Helicopter is connected to AgustaWestland AW109 via the relationship type.
Please determine the diameter of this network and output the corresponding path in the following format: [Entity1, Entity2, ..., EntityN].
test