Question: when did walt disney make his first movie
[{'answer': '1923', 'provenance': [{'wikipedia_id': '20881645', 'title': 'Timeline of The Walt Disney Company', 'start_paragraph_id': 2, 'start_character': 11, 'end_paragraph_id': 2, 'end_character': 15, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]