Question: who made all the call of duty games
[{'answer': 'Activision', 'provenance': [{'wikipedia_id': '8229010', 'title': 'Call of Duty', 'start_paragraph_id': 1, 'start_character': 73, 'end_paragraph_id': 1, 'end_character': 83, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]