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\*.

when did drinking age go from 18 to 21
mid-1988

where are the world athletic championships being held
London

who presides over the meeting of rajya sabha

The Vice President of India