Question: when did the jackson 5 sign with motown
[{'answer': '1969', 'provenance': [{'wikipedia_id': '23416820', 'title': 'The Jackson 5', 'start_paragraph_id': 9, 'start_character': 10, 'end_paragraph_id': 9, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::History.:Early years.\n'}]}]