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: when did justin bieber perform at madison square garden

SOLUTION: August 31, 2010

PROBLEM: who developed a useful staining method to identify bacteria

SOLUTION: Hans Christian Gram

PROBLEM: what type of lizard can walk on water

SOLUTION:
Basiliscus