Question: who is the lead singer of go west
[{'answer': 'Peter Cox', 'provenance': [{'wikipedia_id': '2124828', 'title': 'Go West (band)', 'start_paragraph_id': 1, 'start_character': 64, 'end_paragraph_id': 1, 'end_character': 73, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2124828', 'title': 'Go West (band)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 420, 'bleu_score': 0.819647075070968, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17523135532483047229}, 'section': 'Section::::Abstract.'}]}]