Question: What is the date of birth of the composer of song Warum Nur, Warum??
Sentence (from "Udo Jürgens"): Udo Jürgens (born Jürgen Udo Bockelmann; 30 September 1934 – 21 December 2014) was an Austrian composer and singer of popular music whose career spanned over fifty years.
Relevant evidence: Yes