Question: what does it mean to walk a block
[{'answer': 'unit of distance', 'provenance': [{'wikipedia_id': '948686', 'title': 'City block', 'start_paragraph_id': 44, 'start_character': 16, 'end_paragraph_id': 44, 'end_character': 32, 'bleu_score': 1.0, 'section': 'Section::::Uses.\n'}]}, {'provenance': [{'wikipedia_id': '948686', 'title': 'City block', 'start_paragraph_id': 45, 'start_character': 0, 'end_paragraph_id': 45, 'end_character': 186, 'bleu_score': 0.9364250605898111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10747021907662381366}, 'section': 'Section::::Uses.:As a unit of distance.\n'}]}]