Question: who was the teacher who died on the challenger
[{'answer': 'Sharon Christa McAuliffe', 'provenance': [{'wikipedia_id': '87558', 'title': 'Christa McAuliffe', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 24, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '87558', 'title': 'Christa McAuliffe', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 228, 'bleu_score': 0.7692180976814641, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4015617025928482816}, 'section': 'Section::::Abstract.'}]}]