Question: who directed the film in which kamal hassan made his acting debut
[{'answer': 'K. Balachander', 'provenance': [{'wikipedia_id': '15684122', 'title': 'Kamal Haasan filmography', 'start_paragraph_id': 2, 'start_character': 68, 'end_paragraph_id': 2, 'end_character': 82, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '15684122', 'title': 'Kamal Haasan filmography', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 1010, 'bleu_score': 0.9670935813421611, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5100695940960601992}, 'section': 'Section::::Abstract.'}]}]