context: Literature is located at library. Pen cannot have a location of swamp. Coffee cup is located at desk. Pen cannot have a location of desk. Card catalog is located at bowl alley. Card catalog is located at university. Desk is located at library. Library is located at build. Google is located at bowl alley. Pen cannot have a location of golf bag. Build is located at university. Pen is made of plastic. Office is located at build.
text: Pen is located at build.