In this task, You are given an open-domain question that can be answered based on factual information. Your task is to provide \*short\* answer (in a few words only) for the given question. The short answer can be one or more entities or it can also be boolean \*yes\* or \*no\*.

[Q]: when was the a* introduced at a level
[A]: 2010


[Q]: who led an expedition to explore the louisiana territory
[A]: Lewis and Clark


[Q]: when did i want a hippo for christmas come out
[A]:
November 11, 1953