Question: when did they start calling world war 1
[{'answer': 'September 1914', 'provenance': [{'wikipedia_id': '4764461', 'title': 'World War I', 'start_paragraph_id': 9, 'start_character': 45, 'end_paragraph_id': 9, 'end_character': 59, 'bleu_score': 1.0, 'section': 'Section::::Names.\n'}]}, {'provenance': [{'wikipedia_id': '4764461', 'title': 'World War I', 'start_paragraph_id': 9, 'start_character': 0, 'end_paragraph_id': 9, 'end_character': 350, 'bleu_score': 0.96746874041754, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17842403248277067837}, 'section': 'Section::::Names.\n'}]}]