Aramaic Primacy Questions

[IPOstapyuk]

1. Many Jewish tombs in Israel have been discovered with Greek writing, notably the tomb of Caiaphas. How does this fit into the idea that few Jews in Israel had great knowledge of Greek?

I think logic can help here.

1. I believe that Greek was used to be understood universally.
Looks like Jews understood Greek at least a little bit too.
Other tombs were discovered with threats and curses against robbery,
therefore there was need to
warn other people too.

2. If Jews completely did not understand Greek, there were not
inscriptions only in Greek.

3. When we look on inscription over the crucified Jesus in Hebrew
then this means
that Jews were not good in Greek if was used their language or
not all were good in Greek.