Q: In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
Passage: The Greek peninsula fell under Roman rule in 146 BC, after the Battle of Corinth, when Macedonia became a Roman province. At this time, southern Greece also came under Roman hegemony; however, some key Greek poleis remained partly autonomous and avoided direct Roman taxation. The Hellenistic Kingdom of Pergamon (282–133 BC) was annexed to that territory in 133 BC, when King Attalus III (r. 138–133 BC) willed the lands to Rome; however, the Romans were slow in securing their claim to those lands, and a pretender to the throne of Pergamon, Eumenes III (Aristonicus) led a revolt with the help of the philosopher Blossius, which the Roman army suppressed in 129 BC, when the lands of Pergamon were divided among Rome, the Kingdom of Pontus, and Cappadocia.
 Link Information: Attalus III () Philometor Euergetes (c. 170 BC – 133 BC) was the last Attalid king of Pergamon, ruling from 138 BC to 133 BC. Question: What age was King Attilus when he began his reign?
A:
Answer: 22