In the sentence “I found the owner of the dog,” “the owner of the dog” is a 'noun phrase'.
(..) Bye, Mom. Bye. It's written as P-P-Y, but it's supposed to be an I in "happiness." - Is it an adjective? - No, actually it's a noun. But it's not spelled right. - Is "fuck" spelled right? - Yeah, that's spelled right. But that's not part of the motto, so you're not supposed to learn that. - Okay. (..)2006 The Pursuit of Happyness