With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: John Cena is signed to World Wrestling Entertainment, Inc.
text_B: A tactical event -LRB- Also known as a `` Private Battle '' in the United Kingdom and elsewhere -RRB- is a type of historical reenactment , not usually open to the public , which is fought like a real battle with each side devising strategies and tactics to defeat their opponent -LRB- s -RRB- .. United Kingdom. United Kingdom. historical reenactment. historical reenactment. Tactical events have no script , a basic set of agreed-upon rules -LRB- physical boundaries , time limit , victory conditions , etc. -RRB- , and onsite judges or referees , and so could be considered a form of live action role-playing game .. live action role-playing game. live action role-playing game. Tactical battles might also be considered a form of experimental archaeology .. experimental archaeology. experimental archaeology
not_related.