Roman numerals.
4 seconds sound clip from the Indiana Jones and the Last Crusade movie soundboard.
You can hear this line at 00:26:49 in the Blu-ray version of the movie.
Quote context
[...]
- I hate to interrupt you, but the reason we're here...
- Yes. I have something to show you.
- I left your father working in the library.
- He sent me to the map section to fetch an ancient plan of the city.
- That doesn't look much like a library. Looks like a converted church.
- In this case, it's the literal truth. We are on holy ground.
- I've seen this window before.
- Where?
[...]