Read the text and determine if the sentence is true:

Mirobriga ("Mirobriga Celticorum") is an ancient Roman town located near the village and civil parish of Santiago do Cacem, in the municipality of the same name in the south-west of Portugal. Archeology revealed a that the town occupied the site of an ancient Iron Age settlement that existed since the 9th century B.C.

Sentence: Archeology revealed a that the town occupied the site of an ancient Iron Age settlement that existed since the 4th century B.C.
No