Complex sentence: He joined an anti-Soviet national movement in 1987 and was elected to the Supreme Council of Georgia from the town of Samtredia in Soviet Georgia's first multi-party election in 1990.
Split into simpler sentences: He joined an anti-Soviet national movement in 1987. Dzidziguri was elected to the Supreme Council of Georgia from Samtredia in Soviet Georgia's first multi-party election in 1990.