Sentence:The [e1]bridge[/e1] [e2]pillars[/e2], constructed with stone and lime mortar cores rather than wooden posts, rest on a large oak beam-grate that was built atop the gravel bed of the Danube, at the bottom of the cofferdam.
 e1: bridge. 
 e2 : pillars.
Answer: Component-Whole(e2,e1)