With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Michael Gambon was an actor.
text_B: Members of DC Comics ' All-Star Squadron , a superhero team made up of virtually every DC-owned character from the Golden Age of Comic Books and several newly retconned into that time period .. DC Comics. DC Comics. All-Star Squadron. All-Star Squadron. superhero. superhero. Golden Age of Comic Books. Golden Age of Comic Books
not_related.