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".

Magnets are able to place a force on certain materials. This force is called a magnetic force. The force a magnet exerts is a little different from the forces you may normally think about. You exert a force on a book when you lift it. You also exert a force on the pedals of your bicycle. In both those cases, those forces cause a change. The change you see in both these cases is called motion. Magnets, too, can produce change. They can produce motion just like you do. Unlike you, magnets do not have to touch something to exert a force. A magnetic force is exerted over a distance. Thats right, a magnet can push or pull certain items without ever touching them. Thats how the maglev train works. Do you know another type of force that does not require objects to touch? These forces are known as non-contact forces. Another type of non-contact force you may be familiar with is gravity. Gravity too can cause changes in motion. Gravity holds our moon in orbit without touching it. <sep>What are a few examples of non-contact force?<sep>Gravity
Yes

Living things need non-living matter as well as energy. What do you think matter is used for? One thing is to build bodies. They also need it to carry out the processes of life. Any non-living matter that living things need is called a nutrient. Carbon and nitrogen are examples of nutrients. Unlike energy, matter is recycled in ecosystems. You can see how in Figure 3.11. Decomposers release nutrients when they break down dead organisms. The nutrients are taken up by plants through their roots. The nutrients pass to primary consumers when they eat the plants. The nutrients pass to higher level consumers when they eat lower level consumers. When living things die, the cycle repeats. <sep>What happens to nutrients when the decomposers use them to break down dead organisms?<sep>Disapear
No

I wondered if that were my case--if I rode out for honour, and not for the pure pleasure of the riding.  And I marvelled more to see the two of us, both lovers of one lady and eager rivals, burying for the nonce our feuds, and with the same hope serving the same cause.  We slept the night at Aird's store, and early the next morning found Ringan.  A new Ringan indeed, as unlike the buccaneer I knew as he was unlike the Quaker.  He was now the gentleman of Breadalbane, dressed for the part with all the care of an exquisite.  He rode a noble roan, in his Spanish belt were stuck silver-hafted pistols, and a long sword swung at his side.  When I presented Grey to him, he became at once the cavalier, as precise in his speech and polite in his deportment as any Whitehall courtier.  They talked high and disposedly of genteel matters, and you would have thought that that red-haired pirate had lived his life among proud lords and high-heeled ladies.  That is ever the way of the Highlander.  He alters like a clear pool to every mood of the sky, so that the shallow observer might forget how deep the waters are. <sep>Who was the gentleman of Breadalbane really?<sep>Ringan

Yes

