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Be sure to check that explanation.

the answer to life, the universe, and everything!
alpha wolframalpha.com/input?i=the+a ...
google google.com/search?q=the+answer ...

who wrote Eight Days A Week
alpha wolframalpha.com/input?i=who+w ...
google google.com/search?q=who+wrote+ ...
true knowledge trueknowledge.com/q/who_wrote_ ...

what is the world population by year
alpha wolframalpha.com/input?i=what+ ...
google google.com/search?q=what+is+th ...

when is Rosh Hashanah 5770
alpha wolframalpha.com/input?i=when+ ...
google google.com/search?q=when+is+Ro ...

where is Vulcan
alpha wolframalpha.com/input?i=where ...
google google.com/search?q=where+is+V ...
true knowledge trueknowledge.com/q/where_is_v ...