def initialize_wind_turbine_cluster(example_farm, example_farm_2):
    r"""
    Initializes a :class:`~.wind_turbine_cluster.WindTurbineCluster` object.

    Function shows how to initialize a WindTurbineCluster object. In this case
    the cluster only contains two wind farms.

    Parameters
    ----------
    example_farm : WindFarm
        WindFarm object.
    example_farm_2 : WindFarm
        WindFarm object constant wind farm efficiency and coordinates.

    Returns
    -------
    WindTurbineCluster

    """

    # specification of cluster data
    example_cluster_data = {
        'name': 'example_cluster',
        'wind_farms': [example_farm, example_farm_2]}

    # initialize WindTurbineCluster object
    example_cluster = WindTurbineCluster(**example_cluster_data)

    return example_cluster