Question: where do the altitudes of a triangle intersect
[{'answer': 'the orthocenter', 'provenance': [{'wikipedia_id': '161241', 'title': 'Altitude (triangle)', 'start_paragraph_id': 8, 'start_character': 76, 'end_paragraph_id': 8, 'end_character': 91, 'bleu_score': 1.0, 'section': 'Section::::Orthocenter.\n'}]}, {'provenance': [{'wikipedia_id': '161241', 'title': 'Altitude (triangle)', 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 369, 'bleu_score': 0.930807147807393, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8222888082506774681}, 'section': 'Section::::Orthocenter.\n'}]}]