Question: what is the average lifespan of an airedale terrier
[{'answer': 'about 11.5 years', 'provenance': [{'wikipedia_id': '175765', 'title': 'Airedale Terrier', 'start_paragraph_id': 25, 'start_character': 76, 'end_paragraph_id': 25, 'end_character': 92, 'bleu_score': 1.0, 'section': 'Section::::Health.\n'}]}, {'provenance': [{'wikipedia_id': '175765', 'title': 'Airedale Terrier', 'start_paragraph_id': 25, 'start_character': 0, 'end_paragraph_id': 25, 'end_character': 140, 'bleu_score': 0.9214109120166031, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5613774433516425827}, 'section': 'Section::::Health.\n'}]}]