What is the antecedent for relative pronoun of this sentence who heard news was

The sentence "who heard news was" is incomplete and lacks context. To determine the antecedent of the relative pronoun "who," we need the complete sentence.

Please provide the complete sentence.

For example, if the complete sentence is:

* "The person who heard the news was shocked."

Then the antecedent of "who" is "the person."