Question: What is the name of the writer whose works encompass thirty poems classed as ballads which entail the literary treatment of philosophers and philosophical themes which dates back to 1936?
Sentence (from "Ballads of Petrica Kerempuh"): Ballads of Petrica Kerempuh (Croatian: "Balade Petrice Kerempuha" ) is a philosophically poetical work by Croatian writer Miroslav Krleža, composed in form of thirty poems between December 1935 and March 1936.
Relevant evidence: Yes