I want to know the answer to the following question:
The elevator located at the Casco Viejo station in the Bilbao Metro is also used for what?
All the background I'm provided with is that "At Casco Viejo station in the Bilbao Metro, the elevator that provides access to the station from a hilltop neighborhood doubles as city transportation: the station's ticket barriers are set up in such a way that passengers can pay to reach the elevator from the entrance in the lower city, or vice versa.". Is that enough to answer the question?
Answer: yes