With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Warm Leatherette is by a person who writes lyrics.
text_B: Cleavage may refer to  :. Cleavage -LRB- breasts -RRB- , partial exposure of the separation between a woman 's breasts .. Buttock cleavage , minor exposure of the buttocks and the gluteal cleft between them. Buttock cleavage. Buttock cleavage. Toe cleavage , partial exposure of a woman 's toes in shoes. Toe cleavage. Toe cleavage. Cleavage -LRB- crystal -RRB- , in mineralogy and materials science , is a process of splitting a single crystal .. Cleavage -LRB- geology -RRB- , Foliation perpendicular to stress as a result of ductile deformation .. e.g. shales -LRB- shists -RRB-. Cleavage -LRB- embryo -RRB- , in embryology , is the division of cells in the early embryo .. Cleavage -LRB- fiber -RRB- , in optical fibers .. Teeth cleavage or tooth cleavage , slang for Diastema -LRB- dentistry -RRB- , the gap between a person 's two front teeth .. In cell biology , the cleavage furrow is the indentation that begins the process of cleavage , by which animal cells undergo cytokinesis .. cleavage furrow. cleavage furrow. Bond cleavage in chemistry and biochemistry. Bond cleavage. Bond cleavage. Cleavage -LRB- politics -RRB- The divisions of society that cause people to vote differently. Cleavage -LRB- molecular biology -RRB- , cutting of the 3 ' signaling region from a newly synthesized pre-messenger RNA -LRB- pre-mRNA -RRB- molecule in the process of gene transcription .
not_related.