Question: who sang make em laugh in singin in the rain
[{'answer': "Donald O'Connor", 'provenance': [{'wikipedia_id': '4315321', 'title': "Make 'Em Laugh", 'start_paragraph_id': 1, 'start_character': 108, 'end_paragraph_id': 1, 'end_character': 123, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4315321', 'title': "Make 'Em Laugh", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 316, 'bleu_score': 0.9663744727315161, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2160621886238570338}, 'section': 'Section::::Abstract.'}]}]