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".

[Q]: The digestive system is the body system that digests food. It digest food in two ways, mechanically and chemically. Both help in the process of turning food into nutrients. The digestive system also eliminates solid food waste. The major organs of the digestive system include the mouth, esophagus, stomach, and small and large in- testines. These organs all work together to help you gain energy from the food you eat. Digestion starts in the mouth. When food is swallowed, it travels through the esophagus to the stomach. In the stomach, digestion continues and a small amount of absorption of nutrients takes place. Most chemical digestion and nearly all absorption of nutrients take place in the small intestine. This organ consists of three parts: duodenum, jejunum, and ileum. The large intestine is the last stop in the digestive system. This is where water is absorbed. The food not digested is released as waste. <sep>What are the three parts of the small intestine?<sep>The colon, the duodenum, the esophagus
[A]: No


[Q]: If you build a campfire, you start with a large stack of sticks and logs. As the fire burns, the stack slowly shrinks. By the end of the evening, all that is left is a small pile of ashes. What happened to the matter that you started with? Was it destroyed by the flames? It may seem that way. What do you think happened? The truth is that the same amount of matter still exists. The wood changed not only to ashes, but also to carbon dioxide, water vapor, and other gases. The gases floated off into the air, leaving behind just the ashes. Although matter was changed, it was not created or destroyed. Because the same amount of matter still exists, we can say that matter is conserved. You may wonder how it can be conserved if something is now missing? Assume you had measured the mass of the wood before you burned it. Assume you had also trapped the gases released by the burning wood and measured their mass and the mass of the ashes. What would you find? The ashes and gases combined have the same mass as the wood you started with. This example illustrates the law of conservation of mass. <sep>What is left when the stack shrinks?<sep>A small pile of ashes
[A]: Yes


[Q]: 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. 78–84, 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 capital — along 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 (1005–1034), defeated the Angles at the Battle of Carham in 1018 and extended Scottish territory as far south as the River Tweed. <sep>When the Romans invaded Scotland in A.D. 78-84, which group did they drive out?<sep>The Scots
[A]:
No


