What is the question to: "This layer of organic semiconductor is situated between two electrodes."? The topic is OLED.
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Answer: "what is the organic layer in an amoled screen?"

Q: What is the question to: "The term "effective" is used because the shielding effect of negatively charged electrons prevents higher orbital electrons from experiencing the full nuclear charge by the repelling effect of inner-layer electrons."? The topic is Effective nuclear charge.
A: "What does the idea of effective nuclear charge tell us?"

Question: What is the question to: "Adenosine deaminase deficiency, also called ADA deficiency or ADA-SCID, is an autosomal recessive metabolic disorder that causes immunodeficiency ."? The topic is Adenosine deaminase deficiency.
Answer: "what causes a deficiency in adenosine deaminase?"

[Q]: What is the question to: "Elijah J. McCoy (May 2, 1844 October 10, 1929) was a black Canadian-American inventor and engineer, who was notable for his 57 U.S. patents , most to do with lubrication of steam engines."? The topic is Elijah McCoy.
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[A]: "what did elijah mccoy invent?"

input: Please answer the following: What is the question to: "Richard Milhous Nixon (January 9, 1913 April 22, 1994) was the 37th President of the United States , serving from 1969 to 1974, when he became the only president to resign the office."? The topic is Richard Nixon.
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output: "when president nixon resigns?"

What is the question to: "At the turn of the 21st century, the expanding domain of economics in the social sciences has been described as economic imperialism ."? The topic is Economics.
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Answer:
"What is an economic feature??"