Question: who made call of duty world at war
[{'answer': 'Treyarch', 'provenance': [{'wikipedia_id': '20198488', 'title': 'Call of Duty: World at War', 'start_paragraph_id': 1, 'start_character': 77, 'end_paragraph_id': 1, 'end_character': 85, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '20198488', 'title': 'Call of Duty: World at War', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 657, 'bleu_score': 0.7721970374432361, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6526751356414295514}, 'section': 'Section::::Abstract.'}]}]