Question: whats at the top of the effiel tower
[{'answer': 'a broadcasting aerial', 'provenance': [{'wikipedia_id': '9232', 'title': 'Eiffel Tower', 'start_paragraph_id': 3, 'start_character': 451, 'end_paragraph_id': 3, 'end_character': 472, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '9232', 'title': 'Eiffel Tower', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 676, 'bleu_score': 0.7983761138499471, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10838065443525209698}, 'section': 'Section::::Abstract.'}]}]