With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: In 1603 , after decades of civil warfare , the Tokugawa shogunate ( a military-led , dynastic government ) ushered in a long period of relative political stability and isolation from foreign influence .
text_B: Tokugawa shogunate is a geographical/political entity
not-entailed.