With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: To Kill a Mockingbird is a Southern Gothic short story.
text_B: Aubrey Feist -LRB- December 26 , 1903 -- 1976 -RRB- was a British novelist .. He is known for the publication , in the 1950s and in the 1960s , of adventure novels for young people .
not_related.