With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Beatles were a country band.
text_B: Frederic Labadie-Lagrave -LRB- August 16 , 1844 -- 1917 -RRB- was a French physician who made important contributions to medical literature .. 1917 in science. medical literature. medical literature
not_related.