Question: what do you call a pyramid with a triangular base
[{'answer': 'a tetrahedron', 'provenance': [{'wikipedia_id': '3307045', 'title': 'Pyramid (geometry)', 'start_paragraph_id': 3, 'start_character': 165, 'end_paragraph_id': 3, 'end_character': 178, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3307045', 'title': 'Pyramid (geometry)', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 178, 'bleu_score': 0.929712191543383, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10327723590011639837}, 'section': 'Section::::Abstract.'}]}]