With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Mel Gibson's full name is Mel Colmcille Gerard Gibson.
text_B: , known by her stage name , is a Japanese actress and model .. stage name. stage name. She studied at Mejiro University , where she majored in English .. Mejiro University. Mejiro University
not_related.