Question: who wrote the song a hard day's night
[{'answer': 'John Lennon', 'provenance': [{'wikipedia_id': '1067891', 'title': "A Hard Day's Night (song)", 'start_paragraph_id': 1, 'start_character': 117, 'end_paragraph_id': 1, 'end_character': 128, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Paul McCartney', 'provenance': [{'wikipedia_id': '1067891', 'title': "A Hard Day's Night (song)", 'start_paragraph_id': 1, 'start_character': 159, 'end_paragraph_id': 1, 'end_character': 173, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1067891', 'title': "A Hard Day's Night (song)", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 325, 'bleu_score': 0.9684940092844061, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2805229088500515486}, 'section': 'Section::::Abstract.'}]}]