With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Avril Lavigne is a musician.
text_B: Neval Hollen Thomas -LRB- January 6 , 1874 -- April 13 , 1930 -RRB- was a civil rights activist , high school teacher , and president of the Washington , D.C. local NAACP branch from 1925 to 1930 .. NAACP. National Association for the Advancement of Colored People
not_related.