Question: when was the first tv sold to the public
[{'answer': '1928', 'provenance': [{'wikipedia_id': '628485', 'title': 'Television set', 'start_paragraph_id': 3, 'start_character': 51, 'end_paragraph_id': 3, 'end_character': 55, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '628485', 'title': 'Television set', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 534, 'bleu_score': 0.9361374222844411, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9042152271741044164}, 'section': 'Section::::History.\n'}]}]