Question: what was the last year they made the chevy avalanche
[{'answer': 'April 2013', 'provenance': [{'wikipedia_id': '321396', 'title': 'Chevrolet Avalanche', 'start_paragraph_id': 2, 'start_character': 25, 'end_paragraph_id': 2, 'end_character': 35, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '321396', 'title': 'Chevrolet Avalanche', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 315, 'bleu_score': 0.7081745042374611, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15218094212285311337}, 'section': 'Section::::Abstract.'}]}]