QUESTION: answer this: a necker cube is an example of a(n)??

ANS: an optical illusion
input: What is the answer to this question? who played dumbledore in harry potter and the half blood prince?

output: Michael Gambon
In: which mountains would you cross to travel from northern italy to switzerland??

Out: The Alps
Please answer this: where did the battle of britain take place?

British airspace
Q: Answer this question:

who provided the voice of the geico gecko in its debut??

A: actor Kelsey Grammer
Q: Answer this question:

how far is the atmosphere from the earth??

A:
0 to 7 miles