Complex sentence: A referendum on political reform will be held in Slovakia on 18 September 2010, following a successful petition drive by the liberal Freedom and Solidarity (SaS), the third-largest party in the National Council.
Split into simpler sentences: A referendum on political reform will be held in Slovakia on 18 September 2010. It has been proposed by Freedom and Solidarity (SaS), the third-largest party in the National Council.