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": "author_author", "description": "Fetches all poems from Poetry DB written by a specific poet.", "parameters": {"author": {"description": "The poet's name or a part of the poet's name.", "type": "str", "default": "None"}}}]
Can you fetch all poems written by William Shakespeare?
user
assistant
[{"name": "author_author", "arguments": {"author": "William Shakespeare"}}]