Which Disney movie was the first full-length, animated feature produced in the United States?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q30', 'id': 0, 'label': 'United States of America'}, {'type': 'INTERNAL', 'name_': 'Q434841', 'id': 1, 'label': '20th Century Studios'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q7414', 'id': 2, 'label': 'The Walt Disney Company'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q134430', 'id': 3, 'label': 'Snow White and the Seven Dwarfs'}, {'type': 'INTERNAL', 'name_': 'Q498442', 'id': 4, 'label': 'Spaceballs'}, {'type': 'INTERNAL', 'name_': 'Q2609512', 'id': 5, 'label': 'Happily Ever After'}], 'links': [{'name_': 'P17', 'source': 0, 'target': 0, 'label': 'country'}, {'name_': 'P17', 'source': 1, 'target': 0, 'label': 'country'}, {'name_': 'P127', 'source': 1, 'target': 2, 'label': 'owned by'}, {'name_': 'P495', 'source': 4, 'target': 0, 'label': 'country of origin'}, {'name_': 'P8371', 'source': 4, 'target': 3, 'label': 'references work, tradition or theory'}, {'name_': 'P495', 'source': 5, 'target': 0, 'label': 'country of origin'}, {'name_': 'P272', 'source': 5, 'target': 1, 'label': 'production company'}, {'name_': 'P155', 'source': 5, 'target': 3, 'label': 'follows'}]}