Original: Lech Aleksander KaczyÅ ski ( ; 18 June 1949 - 10 April 2010 ) was the President of Poland from 2005 until his sudden death in 2010 , and a politician of the party Prawo i SprawiedliwoÅ Ä ( Law and Justice , PiS ) .
Simplified: ' ( 18 June 1949 - 10 April 2010 ) was the President of the Republic of Poland from 2005 until his death in a plane crash in Smolensk , Russia on 10 April 2010 .