Original sentence: In February 1992, the Crimean ASSR's parliament renamed it the Republic of Crimea, and in 1998 the Ukrainian parliament renamed it Autonomous Republic of Crimea, following disputes over the republic's constitution and level of autonomy.On February 12, 1991, the Crimean oblast was restored to its pre-WWII status of autonomous Soviet socialist republic following a referendum
Edited sentence: In 1991 Crimea became an autonomous republic.In 1992, Crimea abolished autonomous status and changed its name from ASSR into Republic of Crimea, starting a process of separation and integration with Russia.In 1998 Crimea transformed into the Autonomous Republic of Crimea