Question: Aside from the roller coaster built by Stakotra in 2005, where is the only other strata coaster in existence located?
{'answer': 'Sandusky, Ohio', 'supporting_facts': [['Top Thrill Dragster', 0], ['Top Thrill Dragster', 2], ['Top Thrill Dragster', 3], ['Kingda Ka', 2]]}