Question: when did italy join the allies in ww2
[{'answer': 'September 1943', 'provenance': [{'wikipedia_id': '202061', 'title': 'Military history of Italy during World War II', 'start_paragraph_id': 3, 'start_character': 694, 'end_paragraph_id': 3, 'end_character': 708, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '202061', 'title': 'Military history of Italy during World War II', 'start_paragraph_id': 67, 'start_character': 0, 'end_paragraph_id': 67, 'end_character': 669, 'bleu_score': 0.9812185674664711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17064247348860109720}, 'section': 'Section::::Balkans.:Invasion of Yugoslavia.\n'}]}]