With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Naomi Watts is not an actress.
text_B: Esther Miriam Zimmer Lederberg -LRB- December 18 , 1922 -- November 11 , 2006 -RRB- was an American microbiologist and a pioneer of bacterial genetics .. microbiologist. microbiologist. bacterial genetics. microbial genetics. Notable contributions include the discovery of the bacterial virus λ , the transfer of genes between bacteria by specialized transduction , the development of replica plating , and the discovery of the bacterial fertility factor F -LRB- F plasmid -RRB- .. specialized transduction. Transduction ( genetics ). replica plating. replica plating. lambda phage. fertility factor F. Fertility factor ( bacteria ). Lederberg also founded and directed the now defunct Plasmid Reference Center at Stanford University , where she maintained , named , and distributed plasmids of many types , including those coding for antibiotic resistance , heavy metal resistance , virulence , conjugation , colicins , transposons , and other unknown factors .. Stanford University. Stanford University. plasmids. plasmids. virulence. virulence. conjugation. bacterial conjugation. colicins. colicins. transposons. transposons
not_related.