Question: when did the romantic era start and end
[{'answer': '1800 to 1850', 'provenance': [{'wikipedia_id': '26094', 'title': 'Romanticism', 'start_paragraph_id': 1, 'start_character': 233, 'end_paragraph_id': 1, 'end_character': 245, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '26094', 'title': 'Romanticism', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 941, 'bleu_score': 0.9298160710841361, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18362755122538014448}, 'section': 'Section::::Abstract.'}]}]