Exactly, quoting the article: > We applied our model to a corpus of Ugaritic, an ancient Semitic language discovered in 1928. Ugaritic was manually deciphered

Exactly, quoting the article: > We applied our model to a corpus of Ugaritic, an ancient Semitic language discovered in 1928. Ugaritic was manually deciphered in 1932, us- ing knowledge of Hebrew, a related language. They specifically used a well-known language to be able to test the effectiveness of their approach. Pretty cool nevertheless, but hardly "a dead language that mystified linguists" :)