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\*.

Example Input: average life expectancy of a man in england
Example Output: 79.4

Example Input: who played in the men's semi final in wimbledon in 2015
Example Output: Novak Djokovic

Example Input: where does the tap water in london come from
Example Output:
abstracted from underground sources