If you would like to see some English work the best place to see some is the library.
I believe it’s the exposition. Hope this helps!
In a sentence, there is always a Subject and a Predicate. A subject is the main topic of a sentence, while the predicate is what the subject is pertained to. In the sentence: Relaxing is not as easy as it looks. The subject is Relaxing which is also considered a gerund. And the predicate is 'is not as easy as it looks'.