[IMGCAP(1)]A Capitol Police officer does a double take after walking past an inflatable stegosaurus last week. You may have had the same reaction if you walked past this blown-up creature, which was somewhere on Capitol Hill. Did you see this stegosaurus, and if not, can you deduce its location from the photo? Check back next week for the answer. [IMGCAP(2)]Last week we asked you to identify the friendly reminder shown at right. The sign greets subway riders in the Dirksen Senate Office Building.