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": "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": "polygon_area_shoelace", "description": "Calculates the area of a polygon using the shoelace formula.", "parameters": {"vertices": {"description": "A list of polygon vertices represented as tuples (x, y).", "type": "List[Tuple[float, float]]"}}}]
What is the area of a polygon with vertices at (1, 1), (1, 2), (2, 2), (2, 1) and another polygon with vertices at (3, 3), (3, 4), (4, 4), (4, 3)?
user
assistant
[{"name": "polygon_area_shoelace", "arguments": {"vertices": [[1, 1], [1, 2], [2, 2], [2, 1]]}}, {"name": "polygon_area_shoelace", "arguments": {"vertices": [[3, 3], [3, 4], [4, 4], [4, 3]]}}]