Complex sentence: This is the fourth Euro-Fighter to be added in the United States, the only one in the Northeast, and the first roller coaster to be opened in Canobie Lake Park since the Canobie Corkscrew in 1987.
Split into simpler sentences: This is the fourth Euro-Fighter to be added to the US and the only one in the Northeast. It is the first roller coaster to be added to Canobie Lake Park since the Canobie Corkscrew, which opened in 1987.