Question: who wrote you must have been a beautiful baby
[{'answer': 'music by Harry Warren', 'provenance': [{'wikipedia_id': '15607268', 'title': 'You Must Have Been a Beautiful Baby', 'start_paragraph_id': 1, 'start_character': 61, 'end_paragraph_id': 1, 'end_character': 82, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'lyrics by Johnny Mercer', 'provenance': [{'wikipedia_id': '15607268', 'title': 'You Must Have Been a Beautiful Baby', 'start_paragraph_id': 1, 'start_character': 87, 'end_paragraph_id': 1, 'end_character': 110, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Harry Warren', 'provenance': [{'wikipedia_id': '15607268', 'title': 'You Must Have Been a Beautiful Baby', 'start_paragraph_id': 1, 'start_character': 70, 'end_paragraph_id': 1, 'end_character': 82, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Johnny Mercer', 'provenance': [{'wikipedia_id': '15607268', 'title': 'You Must Have Been a Beautiful Baby', 'start_paragraph_id': 1, 'start_character': 97, 'end_paragraph_id': 1, 'end_character': 110, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '15607268', 'title': 'You Must Have Been a Beautiful Baby', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 278, 'bleu_score': 0.9603762111511761, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9084040538405218604}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '15607268', 'title': 'You Must Have Been a Beautiful Baby', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['"You Must Have Been a Beautiful Baby" is a popular song with music by Harry Warren and lyrics by Johnny Mercer, published in 1938 by Remick Music Corporation. It was featured in the Warner Brothers movie "Hard to Get," released November 1938, in which it was sung by Dick Powell.', '"You Must Have Been a Beautiful Baby" is a popular song with music by Harry Warren and lyrics by Johnny Mercer, published in 1938 by Remick Music Corporation.', '"You Must Have Been a Beautiful Baby" is a popular song with music by Harry Warren and lyrics by Johnny Mercer, published in 1938 by Remick Music Corporation. It was featured in the Warner Brothers movie "Hard to Get," released November 1938, in which it was sung by Dick Powell.']}}]}]