Question: when was school leaving age raised to 15
[{'answer': '1944', 'provenance': [{'wikipedia_id': '7583732', 'title': 'Raising of school leaving age in England and Wales', 'start_paragraph_id': 12, 'start_character': 3, 'end_paragraph_id': 12, 'end_character': 7, 'bleu_score': 1.0, 'section': "Section::::20th century.:Butler's post-war education changes.\n"}]}, {'provenance': [{'wikipedia_id': '7583732', 'title': 'Raising of school leaving age in England and Wales', 'start_paragraph_id': 12, 'start_character': 0, 'end_paragraph_id': 12, 'end_character': 671, 'bleu_score': 0.9822204502117851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3897565468804049787}, 'section': "Section::::20th century.:Butler's post-war education changes.\n"}]}]