Question: where was love on a branch line filmed
[{'answer': 'Oxburgh Hall in Norfolk', 'provenance': [{'wikipedia_id': '17364098', 'title': 'Love on a Branch Line (TV series)', 'start_paragraph_id': 15, 'start_character': 42, 'end_paragraph_id': 15, 'end_character': 65, 'bleu_score': 1.0, 'section': 'Section::::Production.\n'}]}, {'answer': 'Chawton House in Hampshire', 'provenance': [{'wikipedia_id': '17364098', 'title': 'Love on a Branch Line (TV series)', 'start_paragraph_id': 15, 'start_character': 103, 'end_paragraph_id': 15, 'end_character': 129, 'bleu_score': 1.0, 'section': 'Section::::Production.\n'}]}, {'answer': 'North Norfolk Railway', 'provenance': [{'wikipedia_id': '17364098', 'title': 'Love on a Branch Line (TV series)', 'start_paragraph_id': 15, 'start_character': 175, 'end_paragraph_id': 15, 'end_character': 196, 'bleu_score': 1.0, 'section': 'Section::::Production.\n'}]}, {'provenance': [{'wikipedia_id': '17364098', 'title': 'Love on a Branch Line (TV series)', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 284, 'bleu_score': 0.9569637990759251, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12243005476077064608}, 'section': 'Section::::Production.\n'}]}]