Question: when was the last year ford ranger was made
[{'answer': '2011', 'provenance': [{'wikipedia_id': '29227650', 'title': 'Ford Ranger', 'start_paragraph_id': 3, 'start_character': 4, 'end_paragraph_id': 3, 'end_character': 8, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]