Question: what are the masks called in crash bandicoot
[{'answer': 'Aku Aku', 'provenance': [{'wikipedia_id': '18853459', 'title': 'List of Crash Bandicoot characters', 'start_paragraph_id': 5, 'start_character': 11, 'end_paragraph_id': 5, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::Protagonists.\n'}]}, {'provenance': [{'wikipedia_id': '18853459', 'title': 'List of Crash Bandicoot characters', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 743, 'bleu_score': 0.8692809726498371, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15394332875045271029}, 'section': 'Section::::Protagonists.:Aku Aku.\n'}]}]