Question: when did the trains stop running in pei
[{'answer': '31 December 1989', 'provenance': [{'wikipedia_id': '613252', 'title': 'Prince Edward Island Railway', 'start_paragraph_id': 2, 'start_character': 395, 'end_paragraph_id': 2, 'end_character': 411, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '613252', 'title': 'Prince Edward Island Railway', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 601, 'bleu_score': 0.980097014099621, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1904335707040899166}, 'section': 'Section::::Abstract.'}]}]