
I want a PROOF of life of each hostage,
Money Heist Season 1, Episode 9

"A PROOF that algebraic topology...
The Big Bang Theory Season 6, Episode 3

finds PROOF of alien life.'
The Big Bang Theory Season 12, Episode 20

quite the opposite,
if the PROOF of life failed,
Money Heist Season 1, Episode 10

Conclusive PROOF that I am
absolutely worthless
The Big Bang Theory Season 5, Episode 7