Question: when did national allied publications become dc comics
[{'answer': '1977', 'provenance': [{'wikipedia_id': '2226975', 'title': 'National Comics Publications', 'start_paragraph_id': 5, 'start_character': 260, 'end_paragraph_id': 5, 'end_character': 264, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '2226975', 'title': 'National Comics Publications', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 264, 'bleu_score': 0.890257934258152, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5921373104373602170}, 'section': 'Section::::History.\n'}]}]