Question: what is the chamber at the top of a lighthouse called
[{'answer': 'The lantern room', 'provenance': [{'wikipedia_id': '17725', 'title': 'Lighthouse', 'start_paragraph_id': 48, 'start_character': 0, 'end_paragraph_id': 48, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Building.:Components.\n'}]}, {'provenance': [{'wikipedia_id': '17725', 'title': 'Lighthouse', 'start_paragraph_id': 48, 'start_character': 0, 'end_paragraph_id': 48, 'end_character': 471, 'bleu_score': 0.9757530668325981, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7386404001264407582}, 'section': 'Section::::Building.:Components.\n'}]}]