Question: who is known as father of educational psychology
[{'answer': 'Johann Herbart', 'provenance': [{'wikipedia_id': '10332', 'title': 'Educational psychology', 'start_paragraph_id': 15, 'start_character': 87, 'end_paragraph_id': 15, 'end_character': 101, 'bleu_score': 1.0, 'section': 'Section::::History.:Before 1890.\n'}]}, {'provenance': [{'wikipedia_id': '10332', 'title': 'Educational psychology', 'start_paragraph_id': 23, 'start_character': 0, 'end_paragraph_id': 23, 'end_character': 409, 'bleu_score': 0.920732513436575, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12627219959442814539}, 'section': 'Section::::History.:Before 1890.:Johann Herbart.\n'}]}]