With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Scooby-Doo is not a fictional character.
text_B: Aka Manto -LRB- 赤マント Red Cape -RRB- is a Japanese urban legend about a malicious spirit who kills people at public and school toilets , who will ask people if they want red paper or blue paper .. Japanese urban legend. Japanese urban legends. In some versions , he will ask the individual if they want a red or blue cape .. Often described as a beautiful man in life and hounded constantly by admirers , he supposedly wears a mask to hide his face .
not_related.