With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: The Soviet economy and society stagnated in the following decades until General Secretary Mikhail GORBACHEV ( 1985 - 91 ) introduced glasnost ( openness ) and perestroika ( restructuring ) in an attempt to modernize Communism , but his initiatives inadvertently released forces that by December 1991 splintered the USSR into Russia and 14 other independent republics .
text_B: USSR is a time on the clock
not-entailed.