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:
Mechanical energy is a combination of the energy of motion or position. This type of energy describes objects that are moving or could move. A moving ball can have energy from motion. An arrow can also have the energy of motion. Both are types of mechanical energy. Can you think of some other examples? Where does the energy of motion come from? It comes from the energy created by position. This energy is stored energy. This means it is not moving yet, but it has the potential to move. How can you store energy? The arrow gains energy from the drawn bow. As the arrow is released, the bow releases its stored energy and puts the arrow into motion. Can you think of some other ways to store energy using position? <sep>What kind of energy do objects that are moving or could move possess?<sep>Potential energy
answer:
No


question:
When land is cleared, habitats are lost. It may be cleared for agriculture. It may also be used for building new homes or businesses. Within the past 100 years, the amount of land used for agriculture has almost doubled. Land used for grazing cattle has more than doubled. Many wetlands have also been lost to agriculture. The U.S. has lost almost all the natural tall-grass prairies. Thee areas of tall thick grass have virtually disappeared. These areas of land had thick fertile soil. Their grasses had very deep root systems. These deep and thick roots reduced the amount of soil erosion. They also were home to many plants and animals. Prairies were wonderful places. They were home to colorful flowers, prairie dogs, and herds of bison. <sep>What lived on prairies?<sep>Herds of bison
answer:
Yes


question:
A married couple and their three young adult children , a son and two daughters , live in a large compound with a garden and a swimming pool .  A tall fence surrounds the property and the children have never been on the other side of it , for their parents have kept them unaware of the outside world , even of the existence of the telephone .  They are taught different meanings for everyday words .  For example , they are told that a `` zombie '' is `` a small yellow flower , '' and that `` sea '' is a chair .  The parents promise that each child will be ready to venture outside the compound once she or he has lost a dogtooth .  Although the children are told they have a brother just on the other side of the barrier , he never appears .  The only non-family member to come into the house is Christina , a young woman who works as a security guard at the father's factory .  She is driven by the father to the compound traveling both ways blindfolded where she performs sexual favors for the son .  Dissatisfied with his preference for intercourse , Christina seeks oral sex from the elder daughter in exchange for a headband.  The elder daughter obliges but does not recognize the significance of performing cunnilingus .  Later , she gives the headband to her younger sister , in exchange for being licked on the shoulder , Which is marked by an unexplained scar .  The parents have tricked the children into believing that overhead planes are merely toys .  They allow the children to search for toy planes that they have planted on the grounds , and the child that finds the toy owns it . <sep>Who is Christina and how does she get to the compound?<sep>Mother
answer:

No


