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\*.

[EX Q]: who died in the plane crash in greys anatomy
[EX A]: Dr. Lexie Grey

[EX Q]: which article of the constitution outlines the legislative branch
[EX A]: Article One

[EX Q]: which category of drugs includes many substances that are chemically similar to neurotransmitters
[EX A]:
receptor agonists