Question: distance between old delhi railway station and metro station
[{'answer': 'walking distance', 'provenance': [{'wikipedia_id': '7889075', 'title': 'Chandni Chowk metro station (Delhi)', 'start_paragraph_id': 1, 'start_character': 144, 'end_paragraph_id': 1, 'end_character': 160, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7889075', 'title': 'Chandni Chowk metro station (Delhi)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 212, 'bleu_score': 0.950578622812921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1739477361973808403}, 'section': 'Section::::Abstract.'}]}]