Question: when was the first hot air balloon launched
[{'answer': 'November 21 , 1783', 'provenance': [{'wikipedia_id': '38173', 'title': 'Hot air balloon', 'start_paragraph_id': 8, 'start_character': 752, 'end_paragraph_id': 8, 'end_character': 770, 'bleu_score': 1.0, 'section': 'Section::::History.:First manned flight.\n'}]}, {'provenance': [{'wikipedia_id': '38173', 'title': 'Hot air balloon', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 596, 'bleu_score': 0.9796927878356411, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16728161388251841070}, 'section': 'Section::::Abstract.'}]}]