With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Led Zeppelin is not a rock band.
text_B: James Yaffe is an American businessman , executive leader and investor , currently serving as Chief Strategy Officer for Ziff Davis where he oversees strategy , corporate development , and innovation for their three business units -LRB- Ziff Davis , IGN , and AskMen -RRB- .. Ziff Davis. Ziff Davis. IGN. IGN. AskMen. AskMen. Yaffe joined Ziff Davis after co-founding FUEL  : M+C -LRB- with Jonathan Miller -RRB- , serving as an EVP and partner at Windsor Media -LRB- founded by Terry Semel -RRB- and as a co-founder / Managing Partner at Endeavor Market Solutions -LRB- the Corporate Consulting division of Endeavor Talent Agency - now WME / IMG -RRB- .. Ziff Davis. Ziff Davis. Endeavor Talent Agency. Endeavor Talent Agency
not_related.