Question

Defining relative clause​

Answer 1

a clause that is attached to an antecedent by a relative pronoun such as who, which, or that.

"she is researching relative clauses in Basque

Answer 2

relative clause is a kind of subordinate clause that contains the element whose interpretation is provided by an antecedent on which the subordinate clause is grammatically dependent; that is, there is an anaphoric relation between the relativized element in the relative clause and antecedent on which it depends.[1]