Question: when did national health care start in england
[{'answer': '1948', 'provenance': [{'wikipedia_id': '14780936', 'title': 'National Health Service (England)', 'start_paragraph_id': 2, 'start_character': 142, 'end_paragraph_id': 2, 'end_character': 146, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '14780936', 'title': 'National Health Service (England)', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 753, 'bleu_score': 0.9205172231619081, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7842398303280284838}, 'section': 'Section::::Abstract.'}]}]