Question: who made call of duty world at war 2
[{'answer': 'Sledgehammer Games', 'provenance': [{'wikipedia_id': '53842713', 'title': 'Call of Duty: WWII', 'start_paragraph_id': 1, 'start_character': 69, 'end_paragraph_id': 1, 'end_character': 87, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]