With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Samsung Life Insurance is part of a corporation.
text_B: Proto-Afro-Asiatic may refer to. Proto-Afro-Asiatic language  : The reconstructed common ancestor of the Afro-Asiatic languages. Proto-Afro-Asiatic language. Proto-Afro-Asiatic language. Proto-Afro-Asiatic Urheimat  : Theories concerning the original homeland of Afro-Asiatic. Proto-Afro-Asiatic Urheimat. Proto-Afro-Asiatic Urheimat
not_related.