Question: who voices the boogeyman in nightmare before christmas
[{'answer': 'Ken Page', 'provenance': [{'wikipedia_id': '403227', 'title': 'The Nightmare Before Christmas', 'start_paragraph_id': 1, 'start_character': 561, 'end_paragraph_id': 1, 'end_character': 569, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '403227', 'title': 'The Nightmare Before Christmas', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 109, 'bleu_score': 0.8852140475440831, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9420289317786303643}, 'section': 'Section::::Cast.\n'}]}]