Question: When did the composer of song Morgen! die?
Sentence (from "Richard Strauss"): This was followed by several critically acclaimed operas with librettist Hugo von Hofmannsthal: "Elektra" (1909), "Der Rosenkavalier" (1911), "Ariadne auf Naxos" (1912, rev. 1916), "Die Frau ohne Schatten" (1919), "Die ägyptische Helena" (1928), and "Arabella" (1933).
Relevant evidence: No