In Chapter 24 we analyzed sentences with two or more basic structure sentenres that are conjoined: for example:
The children dressed up for Halloween, and they carved jack-o-lanterns out of pumpkins.
S1 + conj +S2
The basic structural relationship among the sentences that we consider in this chapters different from that of subordinating or coordinating conjunction. It is a relationship brought about by a process called embedding, which is the generation of one clause within another higher-order or superordinate clause such that the embedded clause becomes a part of the superordinate main clause. In the case of resuictive relative clauses, the embedding consists of a clause embedded within an NP and modifving that NP for example:
The fans [who were attending the rock concert] had to wait in line for three hours.
(NP[S])