With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: David Harbour has acted in theater.
text_B: David Harbour -LRB- born April 10 , 1974 -RRB- is an American actor who has performed in film , television , and the theatre .. American. American people. He currently stars in the Netflix TV Series Stranger Things as main character Police Chief Jim Hopper .. Netflix. Netflix. Stranger Things. Stranger Things
related.