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": "displacement", "description": "Calculates the displacement of an object given its initial velocity, acceleration, and time.", "parameters": {"initial_velocity": {"description": "The initial velocity of the object.", "type": "float"}, "acceleration": {"description": "The acceleration of the object.", "type": "float"}, "time": {"description": "The time elapsed.", "type": "float"}}}, {"name": "is_valid_sudoku", "description": "Checks if a 9x9 Sudoku board is valid.", "parameters": {"board": {"description": "The Sudoku board represented as a 2D list of strings.", "type": "List[List[str]]"}}}, {"name": "find_longest_palindromic_substring", "description": "Finds the longest palindromic substring in a string.", "parameters": {"s": {"description": "The input string.", "type": "str"}}}, {"name": "sort_numbers", "description": "Sorts a list of numbers in ascending or descending order.", "parameters": {"numbers": {"description": "The list of numbers to be sorted.", "type": "List[float]"}, "descending": {"description": "If True, sorts the numbers in descending order. Defaults to False.", "type": "bool, optional"}}}]
Check if the Sudoku board [[5,3,'.','.',7,'.','.','.','.'], [6,'.','.',1,9,5,'.','.','.'], ['.',9,8,'.','.','.','.',6,'.'], [8,'.','.','.',6,'.','.','.',3], [4,'.','.',8,'.',3,'.','.',1], [7,'.','.','.',2,'.','.','.',6], ['.',6,'.','.','.','.',2,8,'.'], ['.','.','.',4,1,9,'.','.',5], ['.','.','.','.',8,'.','.',7,9]] is valid.
user
assistant
[{"name": "is_valid_sudoku", "arguments": {"board": [[5, 3, ".", ".", 7, ".", ".", ".", "."], [6, ".", ".", 1, 9, 5, ".", ".", "."], [".", 9, 8, ".", ".", ".", ".", 6, "."], [8, ".", ".", ".", 6, ".", ".", ".", 3], [4, ".", ".", 8, ".", 3, ".", ".", 1], [7, ".", ".", ".", 2, ".", ".", ".", 6], [".", 6, ".", ".", ".", ".", 2, 8, "."], [".", ".", ".", 4, 1, 9, ".", ".", 5], [".", ".", ".", ".", 8, ".", ".", 7, 9]]}}]