Question: when is the second sound of the heartbeat produced
[{'answer': 'during inhalation', 'provenance': [{'wikipedia_id': '237412', 'title': 'Heart sounds', 'start_paragraph_id': 11, 'start_character': 68, 'end_paragraph_id': 11, 'end_character': 85, 'bleu_score': 1.0, 'section': 'Section::::Primary heart sounds.:S.\n'}]}, {'provenance': [{'wikipedia_id': '237412', 'title': 'Heart sounds', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 399, 'bleu_score': 0.9196822664155291, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11870995926146255040}, 'section': 'Section::::Primary heart sounds.:S.\n'}]}]