Context: The Chicago Transit Authority's elevated train running through Evanston is called the Purple Line, taking its name from Northwestern's school color. The Foster and Davis stations are within walking distance of the southern end of the campus, while the Noyes station is close to the northern end of the campus. The Central station is close to Ryan Field, Northwestern's football stadium. The Evanston Davis Street Metra station serves the Northwestern campus in downtown Evanston and the Evanston Central Street Metra station is near Ryan Field. Pace Suburban Bus Service and the CTA have several bus routes that run through or near the Evanston campus.

Question: What is the name of the Chicago Transit Authority's elevated train through Evanston?
Answer: the Purple Line

Question: What was Chicago's Purple Line train route named after?
Answer: Northwestern's school color

Question: Which train stations are within walking distance of the southern end of campus?
Answer: Foster and Davis

Question: Which train station is close to the northern end of campus?
Answer: Noyes

Question: What is the name of Northwestern's football stadium?
Answer: Ryan Field

Question: What is the name of the Chicago Transit Authority's elevated train through Central?
Answer: Unanswerable

Question:  What was Chicago's Blue Line train route named after?
Answer: Unanswerable

Question:  Which train stations are within driving distance of the southern end of campus?
Answer: Unanswerable

Question:  Which train station is close to the southern end of campus?
Answer: Unanswerable

Question:  What is the name of Northwestern's soccer stadium?
Answer: Unanswerable