system: 
You are an expert in composing functions. You are given a question and a set of possible functions.
Based on the question, you will need to make one or more function/tool calls to achieve the purpose.
If none of the function can be used, point it out. If the given question lacks the parameters required by the function,
also point it out. You should only return the function call in tools call sections.

If you decide to invoke any of the function(s), you MUST put it in the format of [func_name1(params_name1=params_value1, params_name2=params_value2...), func_name2(params)]

You SHOULD NOT include any other text in the response.

Here is a list of functions in JSON format that you can invoke.

[{'name': 'restaurant_search', 'description': 'Searches for restaurants based on a list of preferred ingredients and maximum calorie count. Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'properties': {'ingredients': {'type': 'array', 'items': {'type': 'string'}, 'description': "A list of ingredients you prefer in the restaurant's dishes."}, 'calories': {'type': 'integer', 'description': "The maximum calorie count you prefer for the restaurant's dishes."}, 'meal': {'type': 'string', 'description': "Type of the meal for the restaurant's dishes, it's optional and could be breakfast, lunch or dinner. Default 'lunch'"}}, 'required': ['ingredients', 'calories']}}, {'name': 'ingredient_replace', 'description': 'Replaces an ingredient in a recipe with a substitute, keeping the calories below a certain number. Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'properties': {'original_ingredient': {'type': 'string', 'description': 'The ingredient in the recipe to replace.'}, 'replacement_ingredient': {'type': 'string', 'description': 'The substitute ingredient to replace the original one.'}, 'calories': {'type': 'integer', 'description': 'The maximum number of calories for the recipe after replacement.'}}, 'required': ['original_ingredient', 'replacement_ingredient', 'calories']}}, {'name': 'recipe_search', 'description': 'Searches for recipes based on a list of ingredients and a maximum caloric value. Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'properties': {'ingredients': {'type': 'array', 'items': {'type': 'string'}, 'description': 'A list of ingredients you want to use in the recipe.'}, 'calories': {'type': 'integer', 'description': 'The maximum number of calories for the recipe.'}, 'meal': {'type': 'string', 'description': "Type of the meal for the recipe, it's optional and could be breakfast, lunch or dinner. Default 'lunch'"}}, 'required': ['ingredients', 'calories']}}]


user: Find a healthy lunch recipe under 500 calories that uses chicken and mushrooms.

Available functions:
[{"name": "restaurant_search", "description": "Searches for restaurants based on a list of preferred ingredients and maximum calorie count.", "parameters": {"type": "dict", "properties": {"ingredients": {"type": "array", "items": {"type": "string"}, "description": "A list of ingredients you prefer in the restaurant's dishes."}, "calories": {"type": "integer", "description": "The maximum calorie count you prefer for the restaurant's dishes."}, "meal": {"type": "string", "description": "Type of the meal for the restaurant's dishes, it's optional and could be breakfast, lunch or dinner. Default 'lunch'"}}, "required": ["ingredients", "calories"]}}, {"name": "ingredient_replace", "description": "Replaces an ingredient in a recipe with a substitute, keeping the calories below a certain number.", "parameters": {"type": "dict", "properties": {"original_ingredient": {"type": "string", "description": "The ingredient in the recipe to replace."}, "replacement_ingredient": {"type": "string", "description": "The substitute ingredient to replace the original one."}, "calories": {"type": "integer", "description": "The maximum number of calories for the recipe after replacement."}}, "required": ["original_ingredient", "replacement_ingredient", "calories"]}}, {"name": "recipe_search", "description": "Searches for recipes based on a list of ingredients and a maximum caloric value.", "parameters": {"type": "dict", "properties": {"ingredients": {"type": "array", "items": {"type": "string"}, "description": "A list of ingredients you want to use in the recipe."}, "calories": {"type": "integer", "description": "The maximum number of calories for the recipe."}, "meal": {"type": "string", "description": "Type of the meal for the recipe, it's optional and could be breakfast, lunch or dinner. Default 'lunch'"}}, "required": ["ingredients", "calories"]}}]

Ground truth: [{"recipe_search": {"ingredients": [["chicken", "mushrooms"], ["mushrooms", "chicken"]], "calories": [500], "meal": ["lunch", ""]}}]