Question: how many casualties were there in world war 1
[{'answer': '40 million', 'provenance': [{'wikipedia_id': '33111', 'title': 'World War I casualties', 'start_paragraph_id': 1, 'start_character': 79, 'end_paragraph_id': 1, 'end_character': 89, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '33111', 'title': 'World War I casualties', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 242, 'bleu_score': 0.887508747915121, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 967891464624020804}, 'section': 'Section::::Abstract.'}]}]