Input (grade 12): Only Caligula, as the last remaining son of Germanicus, managed to survive the purges of Sejanus, and that he did by moving to Capri with Tiberius in 31.
Output (grade 6): Only Caligula, the last remaining son of Germanicus, managed to survive the purges of Sejanus. He had moved to Capri to be with Tiberius in 31.