Question: What year did the park that Spacely's Sprocket Rockets is located open?

<P0-S0> John David "Dave" Jamerson (born August 13, 1967) is an American former professional basketball player who was selected by the Miami Heat in the 1st round (15th overall) of the 1990 NBA Draft. <P0-S1>  Jamerson played for the Houston Rockets, Utah Jazz and New Jersey Nets in 3 NBA seasons. <P0-S2>  His best year as a pro came during the 1991-92 NBA season as a member of the Rockets, when he appeared in 48 games and averaged 4.0 ppg. <P0-S3>  He played collegiately at Ohio University, averaging 31.2 points per game a senior, finishing 2nd in the nation in scoring. <P0-S4>  In 1989, against the University of Charleston, he set a single game record by draining 14 3-pointers and scoring 60 points in the Ohio victory. <P0-S5>  His #33 jersey at OU was retired during a halftime ceremony during a January 2007 game. <P0-S6>  Jamerson graduated from Stow High School He was an Outreach Pastor at Traders Point Christian Church in Indianapolis, IN. <P0-S7>  Now he is the pastor of Renovate Church in Cedar Park, Texas <SEP> <P1-S0>  Every Saturday morning at 7am the Centennial Beach lifeguards train and do drills for 2 hours before the pool opens. <P1-S1>  The Beach opens early on Saturdays and Sundays for “Adult Float” which is a time where adults can come in with any sort of floating devices (not allowed during regular open swim time) and swim with them. <P1-S2>  The shallow end also has an area called the “channel.” <P1-S3>  In the event of inclement weather, poor conditions, low attendance, or insufficient staffing the manager may close the Beach or certain sections of the Beach. <P1-S4>  The facility covers almost 6 acres (24,000 m²) of land with a full two acres (8,000 m²) or 6.2 million gallons of open water from lake Michigan, all tested, re-circulated and chlorinated on site. <P1-S5>  In the channel there is a pool lift for people who cannot use the ladders to get into the pool, they can be let in on the lift. <P1-S6>  Centennial beach is Open on all non-school days from Memorial Day to Labor Day. <P1-S7>  The deep end also has 4 piers on the sides of the deep end for swimmers to sit and relax on without sitting on the walkway. <P1-S8>  The shallow end also has a slide that was added in 2008. <P1-S9> Centennial Beach is a public aquatic park located at 500 W. Jackson Avenue in Naperville, Illinois. <P1-S10>  At the zero depth area of the pool there are 2 large water play features which pour water from about 10 ft up, and water spouts that shoot up water for children to play in and cool off. <P1-S11>  Centennial Beach’s open swim hours are 11am-8pm Monday through Saturday and 11am-6pm on Sunday. <P1-S12>  Among its features is a sand beach next to the shallow end of the pool which offers a zero-depth entry. <P1-S13>  Adult float is every Saturday and Sunday from 9am-10:55am. <P1-S14>  In the 4 ft area there are 3 lanes for lap swimmer’s, where Centennial Beach’s swim team, The Mudrats, practice each week day morning before open swim hours. <SEP> <P2-S0>  This is a junior coaster with a height restriction of only 36 in . <P2-S1>  It is a Vekoma "roller-skater" model roller coaster. <P2-S2>  It is located in the Camp Cartoon section of the park, in Yukon Territory, as the headline attraction. <P2-S3>  It is themed to The Jetsons. <P2-S4> Spacely's Sprocket Rockets is a steel roller coaster located at Six Flags Great America in Gurnee, Illinois. <SEP> <P3-S0>  It first opened in 1976 as Marriott's Great America. <P3-S1>  Six Flags purchased the park from the Marriott Corporation in 1984, making it the seventh park in the chain. <P3-S2> Six Flags Great America is a Six Flags amusement park located at Gurnee, Illinois, in the Chicago metropolitan area. <P3-S3>  As of 2016, the park has ten themed sections, a 20 acre water park, three specially themed children's areas, and various other forms of entertainment. <P3-S4>  The 2016 attendance of the park is estimated to be 2,950,000 million visitors.