Question: when did justin timberlake join the mickey mouse club
[{'answer': '1993', 'provenance': [{'wikipedia_id': '20664', 'title': 'The Mickey Mouse Club', 'start_paragraph_id': 1, 'start_character': 722, 'end_paragraph_id': 1, 'end_character': 726, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]