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".

Ex Input:
Alexis de Tocqueville and Gustave de Beaumont in America: Their Friendship and Their Travels edited by Oliver Zunz, translated by Arthur Goldhammer (University of Virginia Press; 2011) 698 pages; Includes previously unpublished letters, essays, and other writings Du systeme penitentaire aux Etats-Unis et de son application en France (1833) - On the Penitentiary System in the United States and Its Application to France, with Gustave de Beaumont. De la democratie en Amerique (1835/1840) - Democracy in America. It was published in two volumes, the first in 1835, the second in 1840. English language versions: Tocqueville, Democracy in America, trans. and eds., Harvey C. Mansfield and Delba Winthrop, University of Chicago Press, 2000; Tocqueville, Democracy in America (Arthur Goldhammer, trans.; Olivier Zunz, ed.) (The Library of America, 2004) ISBN 978-1-931082-54-9. L'Ancien Regime et la Revolution (1856) - The Old Regime and the Revolution. It is Tocqueville's second most famous work. Recollections (1893) - This work was a private journal of the Revolution of 1848. He never intended to publish this during his lifetime; it was published by his wife and his friend Gustave de Beaumont after his death. Journey to America (1831-1832) - Alexis de Tocqueville's travel diary of his visit to America; translated into English by George Lawrence, edited by J-P Mayer, Yale University Press, 1960; based on vol. V, 1 of the OEuvres Completes of Tocqueville. L'Etat social et politique de la France avant et depuis 1789 - Alexis de Tocqueville Memoir On Pauperism: Does public charity produce an idle and dependant class of society? (1835) originally published by Ivan R. Dee. Inspired by a trip to England. One of Tocqueville's more obscure works. Journeys to England and Ireland 1835 <sep>What work did Tocqueville's wife and Gustave de Beaumont publish after his death?<sep>Recollections

Ex Output:
Yes

Ex Input:
Density is also an important physical property of matter. The concept of density combines what we know about an objects mass and volume. Density reflects how closely packed the particles of matter are. When particles are packed together more tightly, matter is more dense. Differences in density of matter explain many phenomena. It explains why helium balloons rise. It explains why currents such as the Gulf Stream flow through the oceans. It explains why some things float in or sink. You can see this in action by pouring vegetable oil into water. You can see a colorful demonstration in this video. <sep>What are some things density explains?<sep>It explains why some things float in or sink

Ex Output:
Yes

Ex Input:
Sound waves are mechanical waves. They can travel only through matter. They cannot travel through empty space. This was demonstrated in the 1600s by a scientist named Robert Boyle. Boyle placed a ticking clock in a sealed glass jar. The clock could be heard ticking through the air and glass of the jar. Then Boyle pumped the air out of the jar. The clock was still running, but the ticking could not be heard. Thats because the sound couldnt travel without air particles to transfer the sound energy. Is there any other place where sound cannot be heard? Here is a hint: is there any other place that does not have air molecules? Thats right, in space sound cannot be transferred. So can astronauts hear each other? Yes, they can, because they are in enclosed space stations or pressurized suits.In both cases, they are surrounded by air molecules. If they left their space ship and did not use their electronics, they would not be able to hear each other. Next time you watch a science fiction movie, think about this factoid. When spaceships are destroyed by hostile alien beings, there would be no sound heard. Sound waves can travel through many kinds of matter. <sep>Why can astronauts hear each other even if sound cannot be transferred in space?<sep>yes because there are air molecules in spce

Ex Output:
No