Question: when was the best animated feature film oscar introduced
[{'answer': '2002', 'provenance': [{'wikipedia_id': '61830', 'title': 'Academy Award for Best Animated Feature', 'start_paragraph_id': 1, 'start_character': 457, 'end_paragraph_id': 1, 'end_character': 461, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '61830', 'title': 'Academy Award for Best Animated Feature', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 484, 'bleu_score': 0.722912781642139, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12201979228498034462}, 'section': 'Section::::Abstract.'}]}]