Question: what does hhr stand for on a chevy
[{'answer': 'Heritage High Roof', 'provenance': [{'wikipedia_id': '1361602', 'title': 'Chevrolet HHR', 'start_paragraph_id': 1, 'start_character': 37, 'end_paragraph_id': 1, 'end_character': 55, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]