Question: which side of the heart is the largest
[{'answer': 'the left heart', 'provenance': [{'wikipedia_id': '36808', 'title': 'Heart', 'start_paragraph_id': 8, 'start_character': 177, 'end_paragraph_id': 8, 'end_character': 191, 'bleu_score': 1.0, 'section': 'Section::::Structure.:Location and shape.\n'}]}]