Question: who sings the song i want you back
[{'answer': 'the Jackson 5', 'provenance': [{'wikipedia_id': '1689719', 'title': 'I Want You Back', 'start_paragraph_id': 1, 'start_character': 51, 'end_paragraph_id': 1, 'end_character': 64, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1689719', 'title': 'I Want You Back', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 459, 'bleu_score': 0.723186583494266, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13600562240980776993}, 'section': 'Section::::Abstract.'}]}]