Question: where did they film bridge on the river kwai
[{'answer': 'Sri Lanka', 'provenance': [{'wikipedia_id': '42856', 'title': 'The Bridge on the River Kwai', 'start_paragraph_id': 23, 'start_character': 33, 'end_paragraph_id': 23, 'end_character': 42, 'bleu_score': 1.0, 'section': 'Section::::Production.:Filming.\n'}]}, {'provenance': [{'wikipedia_id': '42856', 'title': 'The Bridge on the River Kwai', 'start_paragraph_id': 23, 'start_character': 0, 'end_paragraph_id': 23, 'end_character': 86, 'bleu_score': 0.8852140475440831, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4228879210905566685}, 'section': 'Section::::Production.:Filming.\n'}]}]