...if and when he makes
a worthwhile CONTRIBUTION to science.
The Big Bang Theory Season 6, Episode 9
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
...you must consider only the
CONTRIBUTION of the man to the field...
The Big Bang Theory Season 3, Episode 7
...made a greater CONTRIBUTION
to the discredited field of alchemy...
The Big Bang Theory Season 3, Episode 7