...as they CHALLENGE
the preconceptions of the fields.
The Big Bang Theory Season 2, Episode 4
I see no other option than
to CHALLENGE you to a duel.
The Big Bang Theory Season 5, Episode 17
She has set me a CHALLENGE
Vikings Season 1, Episode 9
You really want to CHALLENGE yourself,
you could learn to speak Hindi.
The Big Bang Theory Season 10, Episode 22
must I CHALLENGE the law?
Vikings Season 1, Episode 1