Question: what is the population of karachi in 2017
[{'answer': '14,910,352', 'provenance': [{'wikipedia_id': '17123', 'title': 'Karachi', 'start_paragraph_id': 60, 'start_character': 336, 'end_paragraph_id': 60, 'end_character': 346, 'bleu_score': 1.0, 'section': 'Section::::Demographics.\n'}]}, {'provenance': [{'wikipedia_id': '17123', 'title': 'Karachi', 'start_paragraph_id': 60, 'start_character': 0, 'end_paragraph_id': 60, 'end_character': 465, 'bleu_score': 0.9731482306711111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 618468083469237969}, 'section': 'Section::::Demographics.\n'}]}]