Question: who has used the case study method for first time
[{'answer': 'Frederic Le Play', 'provenance': [{'wikipedia_id': '304471', 'title': 'Case study', 'start_paragraph_id': 33, 'start_character': 0, 'end_paragraph_id': 33, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '304471', 'title': 'Case study', 'start_paragraph_id': 33, 'start_character': 0, 'end_paragraph_id': 33, 'end_character': 146, 'bleu_score': 0.7701365065543351, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6518043116483652333}, 'section': 'Section::::History.\n'}]}]