Input: analysis of variance (anova) is a test for equality of?

Output: the means of several groups

Input: who has been elected next president of united nation in the first week of june 2013?

Output: John William Ashe

Input: who are the ghosts in lord of the rings?

Output: Dead Men of Dunharrow

Input: where was good karma hospital filmed in sri lanka?

Output:
Galle District