
Those mountains are a
NATURAL fortification.
Game of Thrones Season 6, Episode 7

It's only NATURAL.
The Big Bang Theory Season 12, Episode 12

It could be light bouncing
off a NATURAL object,
The Big Bang Theory Season 12, Episode 20

Men brawl from time to time.
It's only NATURAL.
Game of Thrones Season 5, Episode 8

it'll look like NATURAL causes.
Breaking Bad Season 2, Episode 1