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".

Input: Consider Input: 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

Output: Yes

Input: Consider Input: Earths magnetic field helps protect Earth and its organisms. It protects us from harmful particles given off by the sun. Most of the particles are attracted to the north and south magnetic poles. This is where Earths magnetic field is strongest. This is also where relatively few organisms live. Another benefit of Earths magnetic field is its use for navigation. People use compasses to detect Earths magnetic north pole. Knowing this helps them tell direction. Many animals have natural 'compasses' that work just as well. Birds like the garden warbler in Figure 1.36 use Earths magnetic field. They use it to guide their annual migrations. Recent research suggests that warblers and other migrating birds have structures in their eyes. These structures let them see Earths magnetic field as a visual pattern. <sep>How do garden warblers use the earth's magnetic field to guide animal migration?<sep>Visual pattern

Output: No

Input: Consider Input: On the previous evening,--March 12th,--the monotony of the camp had been unexpectedly disturbed by the arrival, from the direction of Salt Lake City, of a horseman completely exhausted by fatigue and cold, who proved to be no other than Mr. Kane, whose mission to the Mormons by way of California was at that time totally unknown to the army. The next morning he introduced himself to the Governor, was received as his guest, and remained in conference with him throughout the day. What was the character of their communication is unknown, except by inference from its results. When presented to Judge Eckels, on the following day, Mr. Kane exhibited to him the letters he bore from the President, and other letters, also, from Brigham Young, accrediting him as a negotiator in the existing difficulties. To General Johnston he showed nothing; nor did the Governor, to the knowledge of the camp, acquaint either that officer or any other person with the purport of his business. It was evident to everybody, however, that the Mormon leaders, conscious of their inability to resist the force by which they would be assailed so soon as the snow should melt upon the mountains, were engaged in an effort, of which Mr. Kane was the agent, to secure through the Governor, if possible, indemnity for their past offences, in consideration of acknowledgment of his authority. <sep>What person was aware of Mr. Kane's purpose for arrival in town?<sep>Judge Eckels
Output: Yes