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": "expand_around_center", "description": "Helper function to expand around a center for finding palindromic substrings.", "parameters": {"s": {"description": "The input string.", "type": "str"}, "left": {"description": "The left index of the center.", "type": "int"}, "right": {"description": "The right index of the center.", "type": "int"}}}, {"name": "euclidean_distance", "description": "Computes the Euclidean distance between two points in a 2D plane.", "parameters": {"point_a": {"description": "The coordinates of the first point (x, y).", "type": "Tuple[float, float]"}, "point_b": {"description": "The coordinates of the second point (x, y).", "type": "Tuple[float, float]"}}}]
Expand around the center to find the palindromic substring from the string 'racecar' starting at indices 3 and 3, and from the string 'abba' starting at indices 1 and 2.
user
assistant
[{"name": "expand_around_center", "arguments": {"s": "racecar", "left": 3, "right": 3}}, {"name": "expand_around_center", "arguments": {"s": "abba", "left": 1, "right": 2}}]