The Lusitanian leader, Viriathus, kept the Roman forces at bay until he was assassinated in 139 b.c.
Viriathus was assassinated in 139 b.c.
mnli hypothesis: Viriathus was assassinated in 139 b.c. premise: The Lusitanian leader, Viriathus, kept the Roman forces at bay until he was assassinated in 139 b.c.