Question: who wrote the song for all we know
[{'answer': 'J. Fred Coots', 'provenance': [{'wikipedia_id': '3636812', 'title': 'For All We Know (1934 song)', 'start_paragraph_id': 1, 'start_character': 69, 'end_paragraph_id': 1, 'end_character': 82, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Sam M. Lewis', 'provenance': [{'wikipedia_id': '3636812', 'title': 'For All We Know (1934 song)', 'start_paragraph_id': 1, 'start_character': 96, 'end_paragraph_id': 1, 'end_character': 108, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3636812', 'title': 'For All We Know (1934 song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 108, 'bleu_score': 0.617139202167175, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2197485278291460462}, 'section': 'Section::::Abstract.'}]}]