Question: Of Hans Pfitzner and Gaetano Donizetti, which composer's work was produced earlier? 
Sentence (from "Die Rose vom Liebesgarten"): Die Rose vom Liebesgarten is a 1900 opera by Hans Pfitzner to a libretto by James Grun, one of Pfitzner's fellow students at the Frankfurt Conservatory, which had been prompted by an 1890 painting by Hans Thoma "Der Wächter vor dem Liebesgarten".
Relevant evidence: No