The new data 'challenges' many old assumptions. [=the new data gives people reasons to doubt many old assumptions]
He hopes to be the governor's 'challenger' in the next election. [=the candidate running against the governor]
The coach is confident that you will 'rise to the challenge'. [=the coach is confident that you will succeed]
(..) - Please, Stark, by all means. - Oh, Here we go. - Okay. - Uh oh. - Um-hmm. - Never one to shrink from an honest challenge. - Get after it. - Here we go. - It's physics. - Physics! - Right, so, if I lift it, I then rule Asgard? (..)2015 Avengers: Age of Ultron