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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 __execute(model, iteration_number):
 """ Execute a simulation model :param model: a configured diffusion model :param iteration_number: number of iterations :return: computed trends """

    iterations = model.iteration_bunch(iteration_number, False)
    trends = model.build_trends(iterations)[0]
    del iterations
    del model
    return trends