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 led an expedition to explore the louisiana territory
[EX A]: Lewis and Clark

[EX Q]: who wins the fight between achilles and hector
[EX A]: Hector

[EX Q]: who sang if i could see the rhondda one more time
[EX A]:
David Alexander