Question: when did dr phil first appear on oprah
[{'answer': '1998', 'provenance': [{'wikipedia_id': '253413', 'title': 'Phil McGraw', 'start_paragraph_id': 3, 'start_character': 23, 'end_paragraph_id': 3, 'end_character': 27, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '253413', 'title': 'Phil McGraw', 'start_paragraph_id': 23, 'start_character': 0, 'end_paragraph_id': 23, 'end_character': 418, 'bleu_score': 0.972782728923768, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15584972345617698081}, 'section': 'Section::::Television career.:Oprah Winfrey and the "Dr. Phil" show.\n'}]}]