Please answer this: What is the question to: "The series also originated much tie-in merchandise, making the Harry Potter brand worth in excess of $15 billion."? The topic is Harry Potter.
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Answer: "how much are the harry potter movies worth?"


Problem: What is the question to: "This layer of organic semiconductor is situated between two electrodes."? The topic is OLED.

A: "what is the organic layer in an amoled screen?"


Problem: Given the question: What is the question to: "Its twelve member institutions (which are primarily flagship research universities in their respective states, well-regarded academically, and with relatively large student enrollment) are located primarily in the Midwest , stretching from Nebraska in the west to Penn State in the east."? The topic is Big Ten Conference.
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The answer is:
"how many schools are in the big ten?"


input question: What is the question to: "A fleet was sent to Cyprus in 451 BC, but achieved little, and when it withdrew the Greco-Persian Wars drew to a quiet end."? The topic is Greco-Persian Wars.???
output answer: "where did the persian war take place?"


What is the question to: "Cluster sampling is a sampling technique used when "natural" but relatively homogeneous groupings are evident in a statistical population ."? The topic is Cluster sampling.
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Answer: "what is the difference between multistage and cluster sampling?"


Q: What is the question to: "The most commonly used language is English ."? The topic is Languages of the United States.
A:
"what is the official language of america??"