Question: when did school leaving age raised to 16
[{'answer': '1 September 1972', 'provenance': [{'wikipedia_id': '7583732', 'title': 'Raising of school leaving age in England and Wales', 'start_paragraph_id': 2, 'start_character': 120, 'end_paragraph_id': 2, 'end_character': 136, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7583732', 'title': 'Raising of school leaving age in England and Wales', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 353, 'bleu_score': 0.9679895851501501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5367950085672459048}, 'section': 'Section::::Abstract.'}]}]