Question: when was the first donkey kong game released
[{'answer': '1981', 'provenance': [{'wikipedia_id': '6285528', 'title': 'Donkey Kong', 'start_paragraph_id': 1, 'start_character': 206, 'end_paragraph_id': 1, 'end_character': 210, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6285528', 'title': 'Donkey Kong', 'start_paragraph_id': 1, 'start_character': 13, 'end_paragraph_id': 1, 'end_character': 915, 'bleu_score': 0.9269679745246321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13604086169284249790}, 'section': 'Section::::Abstract.'}]}]