Question: who plays ice bear in we bare bears
[{'answer': 'Demetri Martin', 'provenance': [{'wikipedia_id': '44535568', 'title': 'We Bare Bears', 'start_paragraph_id': 1, 'start_character': 217, 'end_paragraph_id': 1, 'end_character': 231, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '44535568', 'title': 'We Bare Bears', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 576, 'bleu_score': 0.6958676824716471, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6664733943228652203}, 'section': 'Section::::Abstract.'}]}]