Question: who is the captain of kolkata knight riders
[{'answer': 'Dinesh Karthik', 'provenance': [{'wikipedia_id': '15860092', 'title': 'Kolkata Knight Riders', 'start_paragraph_id': 23, 'start_character': 1979, 'end_paragraph_id': 23, 'end_character': 1993, 'bleu_score': 1.0, 'section': 'Section::::Players.\n'}]}]