Question: who has given the mastery learning model of teaching
[{'answer': 'Benjamin Bloom', 'provenance': [{'wikipedia_id': '3389587', 'title': 'Mastery learning', 'start_paragraph_id': 1, 'start_character': 158, 'end_paragraph_id': 1, 'end_character': 172, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3389587', 'title': 'Mastery learning', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 622, 'bleu_score': 0.9792717993254391, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8067535976414636131}, 'section': 'Section::::Abstract.'}]}]