Question

Combine with relative clause
My sister came to see us. She is a scientist

Answer 1

Answer -

My sister who is a scientist came to see us.

OR

My sister came to see us who is a scientist.

Answer 2

My sister who is a scientist came to see us.

A relative or an adjective clause is a dependent clause that modify nouns or pronouns. They include a subject and a verb or verb phrase and are introduced by words known as relative pronouns and relative adverbs. These types of pronouns and adverbs are referred to as relative because they relate the clauses to the words they modify. That, who, whom, whose, and which are relative pronouns, and where, when, and why are relative adverbs.

For example:

I'm buying a gift for the neighbor. He helped me move.

I’m buying a gift for the neighbor who helped me move .

( Who helped me move is a relative clause. It contains the relative pronoun who, which also functions as the clause’s subject, and the verb helped. The clause modifies the noun neighbor.)