Question: who is laughing in dark side of the moon
[{'answer': 'Peter Watts', 'provenance': [{'wikipedia_id': '42634', 'title': 'The Dark Side of the Moon', 'start_paragraph_id': 24, 'start_character': 1255, 'end_paragraph_id': 24, 'end_character': 1266, 'bleu_score': 1.0, 'section': 'Section::::Recording.:Voices.\n'}]}, {'provenance': [{'wikipedia_id': '42634', 'title': 'The Dark Side of the Moon', 'start_paragraph_id': 24, 'start_character': 0, 'end_paragraph_id': 24, 'end_character': 1674, 'bleu_score': 0.9928697615361851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4591884429307726458}, 'section': 'Section::::Recording.:Voices.\n'}]}]