Question: what was built first the eiffel tower or blackpool tower
[{'answer': 'Eiffel Tower', 'provenance': [{'wikipedia_id': '305175', 'title': 'Blackpool Tower', 'start_paragraph_id': 1, 'start_character': 227, 'end_paragraph_id': 1, 'end_character': 239, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '305175', 'title': 'Blackpool Tower', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 559, 'bleu_score': 0.753444267987158, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17558892099601226591}, 'section': 'Section::::Abstract.'}]}]