Question: when did it become a law to go to school
[{'answer': '1918', 'provenance': [{'wikipedia_id': '2287044', 'title': 'Compulsory education', 'start_paragraph_id': 39, 'start_character': 3, 'end_paragraph_id': 39, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::History of compulsory education.:Late Modern Era.:United States.\n'}]}, {'provenance': [{'wikipedia_id': '2287044', 'title': 'Compulsory education', 'start_paragraph_id': 39, 'start_character': 0, 'end_paragraph_id': 39, 'end_character': 76, 'bleu_score': 0.850733133512352, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8186304261133930983}, 'section': 'Section::::History of compulsory education.:Late Modern Era.:United States.\n'}]}]