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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_response_time(chatbot, statement='Hello'):
 """ Returns the amount of time taken for a given chat bot to return a response. :param chatbot: A chat bot instance. :type chatbot: ChatBot :returns: The response time in seconds. :rtype: float """

    import time

    start_time = time.time()

    chatbot.get_response(statement)

    return time.time() - start_time