Question: who did the song he ain heavy he my brother
[{'answer': 'the Hollies', 'provenance': [{'wikipedia_id': '5713317', 'title': 'Alan Parsons', 'start_paragraph_id': 3, 'start_character': 276, 'end_paragraph_id': 3, 'end_character': 287, 'bleu_score': 1.0, 'section': 'Section::::Career.\n'}]}, {'provenance': [{'wikipedia_id': '5713317', 'title': 'Alan Parsons', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 1213, 'bleu_score': 0.958509296462782, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4746307443157872379}, 'section': 'Section::::Career.\n'}]}]