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": "schools", "description": "Retrieves the number of schools in the tournament for a given year.", "parameters": {"identifier": {"description": "The identifier for the year of the tournament.", "type": "str", "default": "1959"}}}]
How many schools participated in the 2019 NCAA tournament?
user
assistant
[{"name": "schools", "arguments": {"identifier": "2019"}}]