Question: when was the national school lunch act passed
[{'answer': '1946', 'provenance': [{'wikipedia_id': '1780688', 'title': 'National School Lunch Act', 'start_paragraph_id': 1, 'start_character': 82, 'end_paragraph_id': 1, 'end_character': 86, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1780688', 'title': 'National School Lunch Act', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 592, 'bleu_score': 0.965324401462693, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7354863874214456756}, 'section': 'Section::::Abstract.'}]}]