Question: when was the first frosty the snowman made
[{'answer': '1950', 'provenance': [{'wikipedia_id': '1042070', 'title': 'Frosty the Snowman', 'start_paragraph_id': 1, 'start_character': 188, 'end_paragraph_id': 1, 'end_character': 192, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1042070', 'title': 'Frosty the Snowman', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 903, 'bleu_score': 0.952299112984163, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13024127715774276539}, 'section': 'Section::::1950 short film.\n'}]}]