Complex sentence: Mentz Schulerud (October 17,1915-May 18,2003) was a Norwegian author, radio personality and theatre director best known for his encyclopaedic knowledge of the city of Oslo.
Split into simpler sentences: Mentz Schulerud (17 October 1915--18 May 2003) was a Norwegian author, radio personality and theatre director. He was known for his encyclopaedic knowledge of the city of Oslo.