Question: who plays the alien in monsters vs aliens
[{'answer': 'Rainn Wilson', 'provenance': [{'wikipedia_id': '10812453', 'title': 'Monsters vs. Aliens', 'start_paragraph_id': 1, 'start_character': 520, 'end_paragraph_id': 1, 'end_character': 532, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '10812453', 'title': 'Monsters vs. Aliens', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 37, 'bleu_score': 0.5081327481546141, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15505098208536901642}, 'section': 'Section::::Voice cast.:Aliens.\n'}]}]