Question: when was the first mobile phone released to the public
[{'answer': '17 June 1946'}, {'provenance': [{'wikipedia_id': '1245539', 'title': 'History of mobile phones', 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 659, 'bleu_score': 0.923787402483194, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12009472426110626175}, 'section': 'Section::::Predecessors.\n'}]}]