With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Emmy Rossum was directed by Wolfgang Peterson.
text_B: The Men 's 75 kg event at the 2010 South American Games had its quarterfinals held on March 23 , the semifinals on March 25 and the final on March 27 .. 2010 South American Games. 2010 South American Games
not_related.