Question: who did the voice of mittens in bolt
[{'answer': 'Susie Essman', 'provenance': [{'wikipedia_id': '2017211', 'title': 'Bolt (2008 film)', 'start_paragraph_id': 1, 'start_character': 354, 'end_paragraph_id': 1, 'end_character': 366, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]