Question: who sang lead vocals on last train to clarksville
[{'answer': 'Micky Dolenz', 'provenance': [{'wikipedia_id': '5463753', 'title': 'Last Train to Clarksville', 'start_paragraph_id': 1, 'start_character': 483, 'end_paragraph_id': 1, 'end_character': 495, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5463753', 'title': 'Last Train to Clarksville', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 618, 'bleu_score': 0.9133401472346221, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1354610564224195763}, 'section': 'Section::::Abstract.'}]}]