Question: when was the royal crescent in bath built
[{'answer': '1767 and 1774', 'provenance': [{'wikipedia_id': '507108', 'title': 'Royal Crescent', 'start_paragraph_id': 1, 'start_character': 179, 'end_paragraph_id': 1, 'end_character': 192, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '507108', 'title': 'Royal Crescent', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 464, 'bleu_score': 0.9391235444848881, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17210325649130898551}, 'section': 'Section::::Abstract.'}]}]