Question: who plays the rat in beverly hills chihuahua
[{'answer': 'Cheech Marin', 'provenance': [{'wikipedia_id': '11779733', 'title': 'Beverly Hills Chihuahua', 'start_paragraph_id': 27, 'start_character': 12, 'end_paragraph_id': 27, 'end_character': 24, 'bleu_score': 1.0, 'section': 'Section::::Cast.:Voices.\n'}]}]