Question: Where crushed limestone trail trail  follow the Chicago, Rock Island and Pacific Railroad, also known as Rock Island Line or The Rock?
Sentence (from "Chicago, Rock Island and Pacific Railroad"): The Chicago, Rock Island and Pacific Railroad (CRI&P RW, sometimes called "Chicago, Rock Island and Pacific Railway") (reporting marks CRIP, RI, ROCK) was a Class I railroad in the United States.
Relevant evidence: Yes