Question: Which roller coaster, Viper or El Toro,is a wooden roller coaster at Six Flags Great Adventure in Jackson, New Jersey? 
Sentence (from "El Toro (Six Flags Great Adventure)"): Overall, its structure height of 181 ft is ranked fourth, its drop height of 176 ft is ranked second, and its top speed of 70 mph is ranked fourth among all wooden roller coasters in the world.
Relevant evidence: No