Question: how far is medford ma from boston ma
[{'answer': '3.2 miles', 'provenance': [{'wikipedia_id': '116851', 'title': 'Medford, Massachusetts', 'start_paragraph_id': 1, 'start_character': 18, 'end_paragraph_id': 1, 'end_character': 27, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '116851', 'title': 'Medford, Massachusetts', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 216, 'bleu_score': 0.9451524926983921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7202077536036181216}, 'section': 'Section::::Abstract.'}]}]