Complex sentence: The world's longest water slide, a inflatable slide made in Waimauku, New Zealand back in 2013, is being transported to, and installed at Action Park, with testing scheduled to begin in early July 2015, with an opening date yet to be announced.
Split into simpler sentences: The world's longest water slide, a inflatable slide made in Waimauku, New Zealand back in 2013, is being transported to, and installed at Action Park. Testing is scheduled to begin in early July 2015, with an opening date yet to be announced.