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': 'create_histogram', 'description': 'Create a histogram based on provided data. Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'properties': {'data': {'type': 'array', 'items': {'type': 'integer'}, 'description': 'The data for which histogram needs to be plotted.'}, 'bins': {'type': 'integer', 'description': 'The number of equal-width bins in the range. Default is 10.'}}, 'required': ['data', 'bins']}}, {'name': 'mix_paint_color', 'description': "Combine two primary paint colors and adjust the resulting color's lightness level. Note that the provided function is in Python 3 syntax.", 'parameters': {'type': 'dict', 'properties': {'color1': {'type': 'string', 'description': 'The first primary color to be mixed.'}, 'color2': {'type': 'string', 'description': 'The second primary color to be mixed.'}, 'lightness': {'type': 'integer', 'description': 'The desired lightness level of the resulting color in percentage. The default level is set to 50.'}}, 'required': ['color1', 'color2']}}, {'name': 'finance.calculate_future_value', 'description': 'Calculate the future value of an investment given an initial investment, annual rate of return, and a time frame. Note that the provided function is in Python 3 syntax.', 'parameters': {'type': 'dict', 'properties': {'initial_investment': {'type': 'integer', 'description': 'The initial investment amount.'}, 'rate_of_return': {'type': 'float', 'description': 'The annual rate of return.'}, 'years': {'type': 'integer', 'description': 'The time frame of the investment in years.'}, 'contribution': {'type': 'integer', 'description': 'Optional: Additional regular contributions. Default is 0.'}}, 'required': ['initial_investment', 'rate_of_return', 'years']}}]


user: "Imagine you are planning your finances and you want to calculate the future value of your investments. You have an initial investment of $5000, an annual rate of return of 7%, and you plan to invest for 10 years. Additionally, you will be making regular contributions of $200. After calculating the future value, you want to visualize your annual returns over the past 10 years. The returns are as follows: [7, 8, 9, 6, 7, 8, 10, 9, 8, 7] and you want to create a histogram with 5 bins to better understand the distribution of returns. Later, you decide to take a break and engage in some art. You want to mix two primary paint colors, blue and yellow, and adjust the resulting color's lightness level to 70%. Can you calculate the future value of your investment, create the histogram, and mix the paint colors accordingly?"

Available functions:
[{"name": "create_histogram", "description": "Create a histogram based on provided data.", "parameters": {"type": "dict", "properties": {"data": {"type": "array", "items": {"type": "integer"}, "description": "The data for which histogram needs to be plotted."}, "bins": {"type": "integer", "description": "The number of equal-width bins in the range. Default is 10."}}, "required": ["data", "bins"]}}, {"name": "mix_paint_color", "description": "Combine two primary paint colors and adjust the resulting color's lightness level.", "parameters": {"type": "dict", "properties": {"color1": {"type": "string", "description": "The first primary color to be mixed."}, "color2": {"type": "string", "description": "The second primary color to be mixed."}, "lightness": {"type": "integer", "description": "The desired lightness level of the resulting color in percentage. The default level is set to 50."}}, "required": ["color1", "color2"]}}, {"name": "finance.calculate_future_value", "description": "Calculate the future value of an investment given an initial investment, annual rate of return, and a time frame.", "parameters": {"type": "dict", "properties": {"initial_investment": {"type": "integer", "description": "The initial investment amount."}, "rate_of_return": {"type": "float", "description": "The annual rate of return."}, "years": {"type": "integer", "description": "The time frame of the investment in years."}, "contribution": {"type": "integer", "description": "Optional: Additional regular contributions. Default is 0."}}, "required": ["initial_investment", "rate_of_return", "years"]}}]

Ground-truth function call:
[{"finance.calculate_future_value": {"initial_investment": [5000], "rate_of_return": [0.07], "years": [10], "contribution": [200]}}, {"create_histogram": {"data": [[7, 8, 9, 6, 7, 8, 10, 9, 8, 7]], "bins": [5]}}, {"mix_paint_color": {"color1": ["blue"], "color2": ["yellow"], "lightness": [70]}}]