Question: how long did the battle of ortona last
[{'answer': 'eight days', 'provenance': [{'wikipedia_id': '1086813', 'title': 'Battle of Ortona', 'start_paragraph_id': 14, 'start_character': 22, 'end_paragraph_id': 14, 'end_character': 32, 'bleu_score': 1.0, 'section': 'Section::::Battle.:Mouse-holing.\n'}]}, {'provenance': [{'wikipedia_id': '1086813', 'title': 'Battle of Ortona', 'start_paragraph_id': 14, 'start_character': 0, 'end_paragraph_id': 14, 'end_character': 291, 'bleu_score': 0.9042878500265971, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13044040388982599425}, 'section': 'Section::::Battle.:Mouse-holing.\n'}]}]