
Tell my friend you need to keep me
under OBSERVATION for an hour.
The Big Bang Theory Season 1, Episode 16

His OBSERVATION of high-energy positrons
has provided the first evidence...
The Big Bang Theory Season 2, Episode 11

The OBSERVATION period
is almost over,
Westworld Season 2, Episode 4

I have a conclusion
based on an OBSERVATION.
The Big Bang Theory Season 1, Episode 10