I'm sure he's got a perfectly reasonable
EXPLANATION for where he got it.
Breaking Bad Season 5, Episode 10
A simple EXPLANATION,
Breaking Bad Season 2, Episode 3
...there is no reasonable EXPLANATION
as to why we're here?
The Big Bang Theory Season 1, Episode 2
Okay, the simplest EXPLANATION
is usually the right one.
The Big Bang Theory Season 10, Episode 24
A more plausible EXPLANATION is that his
work in robotics has made an amazing leap.
The Big Bang Theory Season 1, Episode 4