
that is ironically NATURAL.
Westworld Season 3, Episode 8

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

Primates such as ourselves
have a NATURAL instinct...
The Big Bang Theory Season 4, Episode 19

...but that's the NATURAL reaction
of the limbic system...
The Big Bang Theory Season 3, Episode 11

Physika means the science
of NATURAL things.
The Big Bang Theory Season 3, Episode 10