Question: when did wheel of fortune get touch screens
[{'answer': 'February 24 , 1997', 'provenance': [{'wikipedia_id': '25749059', 'title': 'Wheel of Fortune (American game show)', 'start_paragraph_id': 48, 'start_character': 798, 'end_paragraph_id': 48, 'end_character': 816, 'bleu_score': 1.0, 'section': 'Section::::Production.:Set.\n'}]}, {'provenance': [{'wikipedia_id': '25749059', 'title': 'Wheel of Fortune (American game show)', 'start_paragraph_id': 48, 'start_character': 0, 'end_paragraph_id': 48, 'end_character': 1209, 'bleu_score': 0.990970423521577, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14781998215061374716}, 'section': 'Section::::Production.:Set.\n'}]}]