With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Sigmund Freud's work has suffused pop culture.
text_B: Schizencephaly is a rare birth defect characterized by abnormal clefts lined with grey matter that form the ependyma of the cerebral ventricles to the pia mater .. birth defect. birth defect. grey matter. grey matter. ependyma. ependyma. cerebral ventricles. cerebral ventricles. pia mater. pia mater. These clefts can occur bilaterally or unilaterally .. Common clinical features of this malformation include epilepsy , motor deficits , and psychomotor retardation .. epilepsy. epilepsy
not_related.