is the group of words in bold a phrase or a clause? gongs, circular metal percussion instruments, originated…

is the group of words in bold a phrase or a clause? gongs, circular metal percussion instruments, originated in china, where they were—and sometimes still are—used in ceremonial events. phrase clause
Answer
Brief Explanations:
A phrase is a group of words without a subject - verb combination. "Circular metal percussion instruments" has no subject - verb pair, so it's a phrase.
Answer:
phrase