Complex sentence: Hartal 1953 was a country-wide demonstration, hartal, held in Ceylon (now Sri Lanka) on 12 August 1953 in protest of the policies and actions of the United National Party government, which resulted in the resignation of the Prime Minister, Dudley Senanayake.
Split into simpler sentences: Hartal 1953 was a country-wide demonstration, commonly known as a hartal, held in Ceylon (now Sri Lanka) on August 12 1953. It was organized to protest of the policies and actions of the incumbent United National Party government, and resulted in the resignation of the Prime Minister Dudley Senanayake.