Question: who was the last person executed by electric chair
[{'answer': 'Robert Gleason', 'provenance': [{'wikipedia_id': '75215', 'title': 'Electric chair', 'start_paragraph_id': 48, 'start_character': 309, 'end_paragraph_id': 48, 'end_character': 323, 'bleu_score': 1.0, 'section': 'Section::::Decline.\n'}]}]