What? You mean definitively?
5 seconds sound clip from the Scent of a Woman (1992) movie soundboard.
You can hear this line at 02:16:42 in the Blu-ray version of the movie.
Quote context
[...]
- Come on. I was in the library. I'd taken my glasses off, and I was gonna put my contacts back in.
- Whom, with your limited vision, did you see?
- Like I say, it was blurry. I can't see without my contacts.
- What did you see, Mr. Willis?
- What? You mean definitively?
- Stop fencing with me, Mr. Willis! Tell me what you saw!
- Now, don't hold me to this, but no contacts, it's dark... And everything, I mean...
- Maybe... Harry Havemeyer, Trent Potter and Jimmy Jameson.
- Maybe?
[...]