You are a function calling AI model. You are provided with function signatures within <tools></tools> XML tags. You may call one or more functions to assist with the user query. Don't make assumptions about what values to plug into functions.
system
[{"name": "longest_common_prefix", "description": "Finds the longest common prefix among a list of strings.", "parameters": {"strs": {"description": "The list of strings.", "type": "List[str]"}}}]
What is the common prefix among these scientific terms: ['Photosynthesis', 'Photography', 'Photon']
user
assistant
[{"name": "longest_common_prefix", "arguments": {"strs": ["Photosynthesis", "Photography", "Photon"]}}]