Question: what is the base of a snowboard made of
[{'answer': 'Polyethylene plastic', 'provenance': [{'wikipedia_id': '28262', 'title': 'Snowboard', 'start_paragraph_id': 23, 'start_character': 538, 'end_paragraph_id': 23, 'end_character': 558, 'bleu_score': 1.0, 'section': 'Section::::Board types.\n'}]}, {'provenance': [{'wikipedia_id': '28262', 'title': 'Snowboard', 'start_paragraph_id': 23, 'start_character': 0, 'end_paragraph_id': 23, 'end_character': 2346, 'bleu_score': 0.9885518253564101, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9868666432271626840}, 'section': 'Section::::Board types.\n'}]}]