Question: Who is the writer of the ugly duckling?
Disambiguated questions and answers: question: Who is the writer of the ugly duckling children's book, published in 1843?
Who is the writer of the ugly duckling play written in  1941?
answer: Hans Christian Andersen
Andersen
Alan Alexander Milne
A. A. Milne
Milne
Natural Questions answer: Hans Christian Andersen (from the Wikipedia article "The Ugly Duckling")