With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: Following more than three centuries under Portuguese rule , Brazil gained its independence in 1822 , maintaining a monarchical system of government until the abolition of slavery in 1888 and the subsequent proclamation of a republic by the military in 1889 .
text_B: Portuguese is a geographical/political entity
entailed.