TASK DEFINITION: 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\*.
PROBLEM: who walked the tightrope between the twin towers

SOLUTION: Philippe Petit

PROBLEM: where do the san francisco giants play baseball

SOLUTION: AT&T Park

PROBLEM: what is a natural source of salicylic acid

SOLUTION:
willow tree