Detailed Instructions: Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.
Problem:Context : Neltje Blanchan De Graff Doubleday (October 23, 1865 -- February 21, 1918) was a United States scientific historian and nature writer who published several books on wildflowers and birds under the pen name Neltje Blanchan.
Answer : writer
Solution:
What was Neltje Blanchan's occupation?