All 5 Uses

demonstrate
in
The Alchemist, by Coelho
(Edited)

You'll watch them as they grow, demonstrating how the world is always changing.
p. 123.3

demonstrating = showing
And then, as if the desert wanted to demonstrate that the alchemist was right, two horsemen appeared from behind the travelers.
p. 140.6

demonstrate = show
He is going to transform himself into the wind, just to demonstrate his powers.
p. 145.4 *
So, once again, the world had demonstrated its many languages: the desert only moments ago had been endless and free, and now it was an impenetrable wall.
p. 145.8

demonstrated = shown
He didn't need to demonstrate his science and art to anyone.
p. 165.5

demonstrate = show

Definitions:

(1) (demonstrate as in: It demonstrates my point.)
to show
The exact meaning of this sense of demonstrate can depend upon its context. For example:
- "I will demonstrate how to throw a Frisbee." -- show how to do something
- "I will demonstrate how much quicker the new computer is than the old one." -- show how something works
- "Her questioned demonstrated that she was listening and thinking deeply about what was said." -- showed to be true or proved
(2) (demonstrate as in: demonstrate to protest)
a public display supporting a cause -- usually joining with others in a political protest
(3) (meaning too rare to warrant focus)