Question: who did bill hader play in night at the museum 2
[{'answer': 'George Armstrong Custer', 'provenance': [{'wikipedia_id': '18764957', 'title': 'Night at the Museum: Battle of the Smithsonian', 'start_paragraph_id': 28, 'start_character': 26, 'end_paragraph_id': 28, 'end_character': 49, 'bleu_score': 1.0, 'section': 'Section::::Cast.:Exhibits.\n'}]}]