def get_provenance_record(caption):
    """Create a provenance record describing the diagnostic data and plot."""
    record = {
        'caption': caption,
        'statistics': ['diff'],
        'domains': ['user'],
        'plot_type': 'lineplot',
        'authors': [
            'mueller_benjamin',
            'crezee_bas',
            'hassler_birgit',
        ],
        'projects': ['cmug'],
        'references': [
            'acknow_project',
        ],
    }
    return record