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": "competitions_standings", "description": "Fetch the current standings for a specified competition using the Zeus API.", "parameters": {"is_id": {"description": "The unique identifier for the competition.", "type": "str", "default": "PRL"}, "year": {"description": "The year for which standings are to be retrieved. Defaults to '2020'.", "type": "str, optional", "default": "2020"}}}]
Can you fetch the standings for competition ID '123' for the year 2021?
user
assistant
[{"name": "competitions_standings", "arguments": {"is_id": "123", "year": "2021"}}]