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": "greatest_common_divisor", "description": "Computes the greatest common divisor (GCD) of two non-negative integers.", "parameters": {"a": {"description": "The first non-negative integer.", "type": "int"}, "b": {"description": "The second non-negative integer.", "type": "int"}}}]
Can you find the greatest common divisor of 48 and 84, and also of 72 and 108?
user
assistant
[{"name": "greatest_common_divisor", "arguments": {"a": 48, "b": 84}}, {"name": "greatest_common_divisor", "arguments": {"a": 72, "b": 108}}]