instruction:
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\*.
question:
why is the congo river not navigable for its entire course
answer:
the three major falls


question:
who wrote the song love is a rose
answer:
Neil Young


question:
what star wars movie came out before the last jedi
answer:

The Empire Strikes Back