Question: who played the role of dhritarashtra in mahabharat
[{'answer': 'Girija Shankar', 'provenance': [{'wikipedia_id': '7353278', 'title': 'Mahabharat (1988 TV series)', 'start_paragraph_id': 18, 'start_character': 12, 'end_paragraph_id': 18, 'end_character': 26, 'bleu_score': 1.0, 'section': 'Section::::Cast.:Main.\n'}]}]