
...you must consider only the
CONTRIBUTION of the man to the field...
The Big Bang Theory Season 3, Episode 7

And all from a country whose
entire CONTRIBUTION
The Big Bang Theory Season 5, Episode 24

Exactly. As far as I can recall,
his CONTRIBUTION begins and ends there.
Breaking Bad Season 5, Episode 15

...to make any significant CONTRIBUTION
to physics played a trick on you.
The Big Bang Theory Season 2, Episode 6

...made a greater CONTRIBUTION
to the discredited field of alchemy...
The Big Bang Theory Season 3, Episode 7