With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Benedict Cumberbatch is a person.
text_B: A percussionist is a musician who plays a percussion instrument .. musician. musician. percussion instrument. percussion instrument. Although drummers and vibraphonists are considered percussionists , this list only includes percussionists known for playing a variety of percussion instruments .. There is a separate list of drummers .. list of drummers. list of drummers. If a percussionist specializes in a particular instrument , it is listed in parentheses .. Only add names here if the person has their own article on Wikipedia - anything else will be removed .
not_related.