Question: The tune of "O Sanctissima" has been notably reused in the first half of a American civil rights anthem that is most commonly attributed as having descended lyrically from what hymn?
{'answer': "I'll Overcome Some Day", 'supporting_facts': [['O Sanctissima', 0], ['O Sanctissima', 3], ['We Shall Overcome', 0], ['We Shall Overcome', 1]]}