Question: what were two major causes of world war 2
[{'answer': 'Italian fascism in the 1920s', 'provenance': [{'wikipedia_id': '765642', 'title': 'Causes of World War II', 'start_paragraph_id': 1, 'start_character': 196, 'end_paragraph_id': 1, 'end_character': 224, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Japanese militarism and invasion of China in the 1930s'}, {'provenance': [{'wikipedia_id': '765642', 'title': 'Causes of World War II', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 412, 'bleu_score': 0.5456192964824901, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6454720877019364462}, 'section': 'Section::::Abstract.'}]}]