Input: Read this: As the years went by, the three feudal lords and their extensive territories became increasingly autonomous. Finally, in 1673, Shang Kexi petitioned Kangxi for permission to retire to his hometown in Liaodong province and nominated his son as his successor. The young emperor granted his retirement, but denied the heredity of his fief. In reaction, the two other generals decided to petition for their own retirements to test Kangxi's resolve, thinking that he would not risk offending them. The move backfired as the young emperor called their bluff by accepting their requests and ordering that all three fiefdoms to be reverted to the crown.
Question: What happened when Kexi, and the two other generals all retired?

Output: all three fiefdoms to be reverted to the crown.

Input: Read this: Tucson is located 118 mi (190 km) southeast of Phoenix and 60 mi (97 km) north of the United States - Mexico border. The 2010 United States Census puts the city's population at 520,116 with a metropolitan area population at 980,263. In 2009, Tucson ranked as the 32nd largest city and 52nd largest metropolitan area in the United States. A major city in the Arizona Sun Corridor, Tucson is the largest city in southern Arizona, the second largest in the state after Phoenix. It is also the largest city in the area of the Gadsden Purchase. As of 2015, The Greater Tucson Metro area has exceeded a population of 1 million.
Question: What is Tucson's metro area population in 2010?

Output: 980,263

Input: Read this: The Appalachian Mountains (i/plen/ or /pltn/,[note 1] French: les Appalaches), often called the Appalachians, are a system of mountains in eastern North America. The Appalachians first formed roughly 480 million years ago during the Ordovician Period and once reached elevations similar to those of the Alps and the Rocky Mountains before they were eroded. The Appalachian chain is a barrier to east-west travel as it forms a series of alternating ridgelines and valleys oriented in opposition to any road running east-west.
Question: When were the Rocky Mountains formed?

Output: unanswerable

Input: Read this: The exhibits include a collection of royal and other funeral effigies (funeral saddle, helm and shield of Henry V), together with other treasures, including some panels of mediaeval glass, 12th-century sculpture fragments, Mary II's coronation chair and replicas of the coronation regalia, and historic effigies of Edward III, Henry VII and his queen, Elizabeth of York, Charles II, William III, Mary II and Queen Anne.
Question: What kind of panels are in the museum?

Output:
panels of mediaeval glass