With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: There is a person who is in Twenty One Pilots.
text_B: Joshua William `` Josh '' Dun -LRB- born June 18 , 1988 -RRB- is an American musician .. He is the drummer for the musical duo Twenty One Pilots .. Twenty One Pilots. Twenty One Pilots
related.