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": "extract_entities", "description": "Extracts named entities from the provided text using the specified model and RapidAPI key.", "parameters": {"text": {"description": "The text from which to extract named entities.", "type": "str", "default": "U.S. stocks rallied Thursday, with the Dow Jones Industrial Average up 2.9% in a tempestuous first half of the year."}, "model": {"description": "The model to use for named entity recognition. Defaults to None.", "type": "str, optional", "default": ""}}}]
Extract entities from the scientific article excerpt: 'Albert Einstein developed the theory of relativity.'
user
assistant
[{"name": "extract_entities", "arguments": {"text": "Albert Einstein developed the theory of relativity."}}]