def METHOD_NAME() -> pd.DataFrame:
    columns = ['strain', 'date', 'country']
    data = [
        ("SEQ_1","2020-01-XX","A"),
        ("SEQ_2","2020-02-01","A"),
        ("SEQ_3","2020-03-01","B"),
        ("SEQ_4","2020-04-01","B"),
        ("SEQ_5","2020-05-01","B")
    ]
    return pd.DataFrame.from_records(data, columns=columns).set_index('strain')