Question: who sang we're a couple of swells
[{'answer': 'Judy Garland', 'provenance': [{'wikipedia_id': '918091', 'title': 'Easter Parade (film)', 'start_paragraph_id': 1, 'start_character': 55, 'end_paragraph_id': 1, 'end_character': 67, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Fred Astaire', 'provenance': [{'wikipedia_id': '918091', 'title': 'Easter Parade (film)', 'start_paragraph_id': 1, 'start_character': 69, 'end_paragraph_id': 1, 'end_character': 81, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '918091', 'title': 'Easter Parade (film)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 276, 'bleu_score': 0.834785954800175, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 309456827638970626}, 'section': 'Section::::Abstract.'}]}]