
Now I'm thinking about the ORIGIN
of the phrase "train of thought."
The Big Bang Theory Season 4, Episode 20

Oh, I don't know. Maybe because
the ORIGIN of the universe
The Big Bang Theory Season 7, Episode 20

that has no seal
and with no registration of the ORIGIN.
Money Heist Season 1, Episode 10

There's the ORIGIN
of an entire species
to consider.
Westworld Season 2, Episode 9

Usually Mantari in ORIGIN.
Game of Thrones Season 4, Episode 10