instruction:
In this task, you will be presented with a context passage, a question about that paragraph, and a possible answer to that question. The task is to check the validity of the answer. Answer with "Yes" or "No".
question:
From a human point of view, a habitat is where you live. It might be your city, town, or neighborhood. Your habitat can be altered. Most people move a few times in their lives. But a plant cannot move. An animal may not be suited to live in another area. A habitat is the natural home or environment of an organism. Humans often destroy the habitats of other organisms. The loss of habitat can cause the extinction of species. Extinction is when a species disappears forever. Once a species is extinct, it can never be brought back. Humans cause habitat destruction in many ways. There are two common ways this happens. Land may be cleared. Another way is when an animal or plant is brought to an area where it does not belong. <sep>Once a species is extinct, can it be brought back?<sep>no, it is gone forever.
answer:
Yes

question:
According to the radar reconstruction, American 77 reemerged as a primary target on Indianapolis Center radar scopes at 9:05, east of its last known position. The target remained in Indianapolis Center's airspace for another six minutes, then crossed into the western portion of Washington Center's airspace at 9:10. As Indianapolis Center continued searching for the aircraft, two managers and the controller responsible for American 77 looked to the west and southwest along the flight's projected path, not east-where the aircraft was now heading. Managers did not instruct other controllers at Indianapolis Center to turn on their primary radar coverage to join in the search for American 77. In sum, Indianapolis Center never saw Flight 77 turn around. By the time it reappeared in primary radar coverage, controllers had either stopped looking for the aircraft because they thought it had crashed or were looking toward the west. Although the Command Center learned Flight 77 was missing, neither it nor FAA headquarters issued an all points bulletin to surrounding centers to search for primary radar targets. American 77 traveled undetected for 36 minutes on a course heading due east for Washington, D.C. By 9:25, FAA's Herndon Command Center and FAA headquarters knew two aircraft had crashed into the World Trade Center. They knew American 77 was lost. At least some FAA officials in Boston Center and the New England Region knew that a hijacker on board American 11 had said "we have some planes." Concerns over the safety of other aircraft began to mount. A manager at the Herndon Command Center asked FAA headquarters if they wanted to order a "nationwide ground stop." While this was being discussed by executives at FAA headquarters, the Command Center ordered one at 9:25. The Command Center kept looking for American 77. At 9:21, it advised the Dulles terminal control facility, and Dulles urged its controllers to look for primary targets. At 9:32, they found one. Several of the Dulles controllers "observed a primary radar target tracking eastbound at a high rate of speed" and notified Reagan National Airport. FAA personnel at both Reagan National and Dulles airports notified the Secret Service. <sep>What was ordered at the Command Center at 9:25?<sep>Grounding
answer:
Yes

question:
The city of Edinburgh grew up around the steep, ragged cliff of the Castle Rock and its easily defended summit. Archaeological excavations have revealed evidence of habitation here as long ago as 900 b.c. Very little, however, is known about the Rock and its inhabitants in the centuries between its first occupation and the time of the MacAlpin kings. A few shadowy details have been left to us by the Romans and by an epic poem from the seventh century. Romans and Britons The Romans invaded Scotland in a.d. 7884, where they met a fierce group called the Picts, whom they drove north. They consolidated their gains by building Antonine's Wall across the waist of Scotland between the Firth of Forth and the River Clyde in about a.d. Roman legions encountered the strongholds of the Castle Rock and Arthur's Seat, held by a tribe of ancient Britons known as the Votadini. Little is recorded about this group, but they were probably the ancestors of the Gododdin, whose feats are told in a seventh-century Old Welsh manuscript. The capital of the Gododdin was Din Eidyn (the "Fort of Eidyn," almost certainly the Castle Rock), whose name lives on in the Edin- of Edinburgh. Din Eidyn fell to the Angles in 638 and became part of the Anglian kingdom of Northumbria. It was the first of many times that the Fort of Eidyn would change hands between the kingdoms of the north and the south. The MacAlpin Kings Four distinct peoples once inhabited the land now known as Scotland: the Picts in the north, the Britons in the southwest, the invading Angles in the southeast, and the Scots in the west. The Scots were Gaelic-speaking immigrants from the north of Ireland. Kenneth MacAlpin, who ruled as king of Scots at Dunadd, acquired the Pictish throne in 843, uniting Scotland north of the River Forth into a single kingdom. He moved his capitalalong with the Stone of Destiny (on which Scottish kings were crowned)to the sacred Pict site of Scone, close to Perth. His great-great-great-grandson, Malcolm II (10051034), defeated the Angles at the Battle of Carham in 1018 and extended Scottish territory as far south as the River Tweed. <sep>What do we know about the Votadini?<sep>They are a tribe of ancient Britons, they held Castle Rock, and they were probably the ancestors of the Gododdin, whose feats are told in a seventh-century Old Welsh manuscript
answer:
Yes