def get_all_sectors_of_narratives(narratives):
    """Get all defined sectors of all narratives

    ARguments
    --------
    narratives : list
        All defined narratives

    Returns
    -------
    all_sectors : list
        All sectors
    """
    all_sectors = set()
    for narrative in narratives:
        all_sectors.add(narrative['sector'])
    all_sectors = list(all_sectors)
    return all_sectors
