Complex sentence: Sahir Ludhianvi is the pen name of Abdul Hayee (8 March 1921--25 October 1980) who is popularly known as Sahir, was an Indian poet and film lyricist who wrote in the Hindi and Urdu languages.
Split into simpler sentences: Sahir Ludhianvi is the pen name of Abdul Hayee (8 March 1921--25 October 1980) who is popularly known as Sahir. Sahir was an Indian poet and film lyricist who wrote in the Hindi and Urdu languages.