def get_location(task, lat_long_sep='', long_year_sep='---'):

    """
    Parse a task and return its unique, lat, long, year location key

    :param task: task from task.json
    :type task: dict
    :param lat_long_sep: delimiter to be placed between lat/long in final output
    :type lat_long_sep: str
    :param long_year_sep: delimiter to be placed between long/year in final output
    :type long_year_sep: str
    :rtype: string
    """

    latitude = str(task['info']['latitude'])
    longitude = str(task['info']['longitude'])
    year = str(task['info']['year'])

    return latitude + lat_long_sep + longitude + long_year_sep + year