[eigenspace]

The Semitic language family is not part of the proto-indo-european language family. It's from the Afroasiatic family

https://en.wikipedia.org/wiki/Semitic_languages

https://en.wikipedia.org/wiki/Afroasiatic_languages

[kevin_thibedeau]

Persian is PIE and had influence over semitic languages in cultural contact. The connection could be there.

[z500]

Egyptian had it, and although it's Afroasiatic it's not Semitic, so it must have gone back further than that.