the relative pronoun refers to or relates to a noun that has gone for it.the noun it refers to is called its antecedent.relative pronouns are also helpful in linking sentences.
examples : who , that , which , whose and whom are relative pronouns.
i met the man who wrote this book.
this is the toy that my father bought.
i have a dress which is made of silk.
this is rekha whose house is being painted.
this is my father whom you met last week.