With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Perth is the capitol of the state of matter.
text_B: Sancti Spiritus Airport is an airport serving Sancti Spiritus , the capital city of the Sancti Spiritus Province in Cuba .. airport. airport. Sancti Spiritus. Sancti Spiritus. capital city. capital city. Sancti Spiritus Province. Sancti Spiritus Province. Cuba. Cuba
not_related.