Question: Sky Rocket was renovated into which roller coaster, that had the longest drop at the time?
Related documents: [0]  [DOC] Sky Rocket is a steel roller coaster located at Kennywood Park in Pittsburgh, Pennsylvania. It is the first coaster erected at the park since the renovation of the Steel Phantom into the Phantom's Revenge in 2001; it also marks the return of a roller coaster that features inversions. It was completed in the late spring of 2010 and after a period of testing opened at the end of June. [END] 
[1]  [DOC] Phantom's Revenge (formerly known as Steel Phantom) is a steel roller coaster at Kennywood. When it opened in 1991, it was the fastest roller coaster and had the longest drop of any roller coaster in the world. The ride was originally manufactured by Arrow Dynamics. After the 2000 season, D.H. Morgan Manufacturing was brought in to renovate the ride, most notably to remove the four inversions. Unlike most roller coasters, the ride's second drop through Thunderbolt's structure is longer than its first drop. [END] 
Answer: 
Phantom's Revenge
Phantom's Revenge