Question: where is the ghost rider and when did it open
[{'answer': "Knott 's Berry Farm", 'provenance': [{'wikipedia_id': '1796138', 'title': 'GhostRider (roller coaster)', 'start_paragraph_id': 1, 'start_character': 41, 'end_paragraph_id': 1, 'end_character': 62, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'December 8 , 1998'}]