Question: Which was opened more recently, Wild Rapids Waterslide Park, or World Waterpark?

Context paragraphs:
World Waterpark Association: The World Waterpark Association (WWA), which was started in 1982, is an international not-for-profit member-based trade association that serves waterparks, aquatic venues and spray parks.  The WWA is focused on providing its 1200 members with the education and networking that they need to operate safely and effectively.

Wild Rapids: Wild Rapids (爆流 , Bakaryu ) is a water sports video game developed by Fujimic, Inc in 2000 for the PlayStation.  It is the first kayaking game to be released on the console.

Grizzly Jack's Grand Bear Resort: Grizzly Jack's Grand Bear Resort is an indoor waterpark resort in Utica, Illinois next to Starved Rock State Park.  It opened in the summer of 2005, and is Illinois' first indoor waterpark.  The three-story resort has hotel-style rooms, log cabins and villas, an indoor waterpark, a fitness center, and 2 conference rooms.

Yas Waterworld Abu Dhabi: Yas Waterworld Abu Dhabi is a waterpark in the United Arab Emirates, located on Yas Island in Abu Dhabi.  The park is home to 45 rides, slides and attractions – five of which are world-firsts, including Bubble’s Barrel, a FlowBarrel 10 Double Sheet Wave ride, and Dawwama, a hydro magnetic-powered 6-person tornado waterslide.

Aquapark di Zambrone: Aquapark Zambrone was the first water park in southern Italy, located on the coast of the comune of Zambrone in the Province of Vibo Valentia.  The World Waterpark Association calls it "one of the largest and most famous waterparks of Southern Italy".  Construction began on January 11, 1989 and seven months later, on August 13 of the same year, its gates were opened for the first time to the public.  The 60000 m2 park closed in 2007 to make way to a luxury resort hotel.

World Waterpark: World Waterpark is a water park located at West Edmonton Mall in Edmonton, Alberta, Canada.  Opened to the public in 1986, it is the world's second-largest indoor water park after the Tropical Islands Resort in Germany.  It has a maximum capacity of 5000 guests, an average air temperature of 31 °C , and contains the world's largest indoor wave pool with a capacity of 12.3 million litres.

Wild Rapids Waterslide Park: Wild Rapids Waterslides was a water park located on the shores Sylvan Lake in the resort town of Sylvan Lake, Alberta, Canada.  Opened to the public in 1982, it was Alberta's second-largest water park after the World Waterpark in Edmonton.  Not to be confused with the now closed Wild Waters Waterslides in Edmonton, it was one of five waterslide parks in Alberta, and the last outdoor one.  The park contained 12 slides, many small pools, three hot tubs, and a children's water playground.  The park was set to close after the 2016 season after being opened for 34 years.  The park was also located near Red Deer, and between Edmonton and Calgary.  The park was also located along Alberta Highway 11A.  The park was constructed on a pier, and the facility was the largest of its kind in western Canada.

Fauna of Kaziranga National Park: Kaziranga National Park (Assamese: কাজিরঙা রাষ্ট্রীয় উদ্যান, IAST: kājirangā jātiya uddyāna, ] ) is an Indian national park and a World Heritage Site in Golaghat and Nagaon districts of Assam, India.  It is refuge for the world's largest population of great one-horned rhinoceros.  Kaziranga has the highest density of tigers among protected areas in the world and was declared a Tiger Reserve in 2006.  The park has large breeding populations of elephant, wild Asiatic water buffalo and swamp deer.  Kaziranga is recognized as an Important Bird Area by Birdlife International for conservation of avifaunal species.  The park has achieved notable progress in wildlife conservation with respect to other protected areas in India.Kaziranga was declared a Tiger Reserve in 2006

Splash Kingdom Waterpark: Splash Kingdom Waterpark (formerly known as Pharaoh's Lost Kingdom) is an Egyptian-beach themed water park, trampoline park, and concert venue located in Redlands, California, United States.  Splash Kingdom is the largest water park in the Inland Empire.  The park is known for having the world's tallest enclosed body-flume waterslide, and the world's tallest free-standing water slide tower.  Splash Kingdom also has a Fun Park which includes three race cart tracks, bumper boats, and mini golf.  The park also boasts a concert amphitheater, sports bar, and arcade.

Wet N Wild (North Shields): Wet N Wild is an indoor water park situated in North Shields, Tyne and Wear, England.  It was the United Kingdom's largest indoor water park when opened in 1993, a title subsequently claimed by Sandcastle Waterpark.  The park is situated in the Royal Quays complex, and features numerous slides, a wave machine, and rapids.  It was confirmed Wet N Wild would reopen following a takeover by Moirai Capital Investments;

Supporting paragraphs: Wild Rapids Waterslide Park World Waterpark
Answer: World Waterpark