With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Minos had a wife and he was Greek.
text_B: Sperm heteromorphism is the simultaneous production of two or more distinguishable types of sperm by a single male .. sperm. sperm. male. male. The sperm types might differ in size , shape and / or chromosome complement .. sperm. sperm. chromosome. chromosome. Sperm heteromorphism is also called sperm polymorphism or sperm dimorphism -LRB- for species with two sperm types -RRB- .. sperm. sperm. Typically , only one sperm type is capable of fertilizing eggs .. sperm. sperm. eggs. ovum. Fertile types have been called `` eusperm '' or `` eupyrene sperm '' and infertile types `` parasperm '' or `` apyrene sperm '' .. sperm. sperm. One interpretation of sperm polymorphism is the `` kamikaze sperm '' hypothesis -LRB- Baker and Bellis , 1988 -RRB- , which has been widely discredited in humans .. sperm. sperm. The kamikaze sperm hypothesis states that the polymorphism of sperm is due to a subdivision of sperm into different functional groups .. sperm. sperm. There are those that defend the egg from fertilization by other male sperm , and those that fertilize the egg .. sperm. sperm. male. male. However , there is no evidence that the polymorphism of human sperm is for the purpose of antagonizing rival sperm .. sperm. sperm
not_related.