Question: Which state is Sisters State Park located in, which is bisected by U.S. Route 20, the longest road in the United States, spanning 3365 miles?
Sentence (from "Mannheim Road"): It carries U.S. Routes 12 from Des Plaines to 95th St near Hickory Hills, 45 between Des Plaines on southwards past Frankfort, Illinois and carries U.S. Route 20 between Lake Street in Stone Park, Illinois and 95th St. near Hickory Hills, Illinois The road is named after a former town called Mannheim, Illinois that was founded by German farmers in what is now Franklin Park, Illinois.
Relevant evidence: No