With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Grant Gustin is a Mexican.
text_B: Sphodromantis centralis , common name African mantis or Central African mantis , is a species of praying mantis from Africa .. Sphodromantis. Sphodromantis. common name. common name. praying mantis. praying mantis. Africa. Africa
not_related.