Question: when was the first handheld hair dryer invented
[{'answer': '1890', 'provenance': [{'wikipedia_id': '986413', 'title': 'Hair dryer', 'start_paragraph_id': 19, 'start_character': 3, 'end_paragraph_id': 19, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}]