Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.

Ex Input:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushing the swing in Figure 13.1. The force of the push causes the swing to move. Force is a vector because it has both size and direction. For example, the girl in Figure 13.1 is pushing the swing away from herself. Thats the direction of the force. She can give the swing a strong push or a weak push. Thats the size, or strength, of the force. Like other vectors, forces can be represented with arrows. Figure 13.2 shows some examples. The length of each arrow represents the strength of the force, and the way the arrow points represents the direction of the force. How could you use an arrow to represent the girls push on the swing in Figure 13.1? The SI unit of force is the newton (N). One newton is the amount of force that causes a mass of 1 kilogram to accelerate at 1 m/s2 . Thus, the newton can also be expressed as kgm/s2 . The newton was named for the scientist Sir Isaac Newton, who is famous for his law of gravity. Youll learn more about Sir Isaac Newton later in the chapter. More than one force may act on an object at the same time. In fact, just about all objects on Earth have at least two forces acting on them at all times. One force is gravity, which pulls objects down toward the center of Earth. The other force is an upward force that may be provided by the ground or other surface. Consider the example in Figure 13.3. A book is resting on a table. Gravity pulls the book downward with a force of 20 newtons. At the same time, the table pushes the book upward with a force of 20 newtons. The combined forces acting on the book or any other object are called the net force. This is the overall force acting on an object that takes into account all of the individual forces acting on the object. You can learn more about the concept of net force at this URL: . When two forces act on an object in opposite directions, like the book on the table, the net force is equal to the difference between the two forces. In other words, one force is subtracted from the other to calculate the net force. If the opposing forces are equal in strength, the net force is zero. Thats what happens with the book on the table. The upward force minus the downward force equals zero (20 N up - 20 N down = 0 N). Because the forces on the book are balanced, the book remains on the table and doesnt move. In addition to these downward and upward forces, which generally cancel each other out, forces may push or pull an object in other directions. Look at the dogs playing tug-of-war in Figure 13.4. One dog is pulling on the rope with a force of 10 newtons to the left. The other dog is pulling on the rope with a force of 12 newtons to the right. These opposing forces are not equal in strength, so they are unbalanced. When opposing forces are unbalanced, the net force is greater than zero. The net force on the rope is 2 newtons to the right, so the rope will move to the right. Two forces may act on an object in the same direction. You can see an example of this in Figure 13.5. After the man on the left lifts up the couch, he will push the couch to the right with a force of 25 newtons. At the same time, the man to the right is pulling the couch to the right with a force of 20 newtons. When two forces act in the same direction, the net force is equal to the sum of the forces. This always results in a stronger force than either of the individual forces

Ex Output:
force that a person or thing exerts on to an object


Ex Input:
The movie opens with James Reece (Jonathan Rhys Meyers) driving through the streets of Paris in a black SUV to work. Reece works in the American Embassy as an aide to Ambassador Bennington (Richard Durden), the U.S. Ambassador to France. Taking a delivery of some forms from the Ambassador's secretary, he goes over Bennington's itinerary for the next few days, centering around a major summit in which the U.S., France, and several other nations are preparing foreign aid to the African continent. Bennington shows that he is more absorbed right now in a chess game he's playing with Reece during all this time. Despite paying less attention to the board and the game than Bennington is, Reece quickly checkmates him to win.Reece receives a call from an unknown source (voiced by David Gasman) directing him to a silver BMW in the parking lot, excusing himself with a cover story to Bennington that he has to review the Summit's planned seating arrangement. Going to the parking lot, Reece opens a code-locked security compartment in the trunk of his SUV to reveal a firearm and several French license plates. He removes the license plate from the silver BMW and replaces it with one of the plates he has stowed away in his SUV. He then moves his SUV to another parking space and waits there, watching the silver BMW. He watches several men get into the vehicle, put a briefcase into its trunk, and drive away.Arriving home, Reece gets another call from the same source. Reece is in fact a CIA operative working in the Embassy as a cover. He does minor jobs for his superiors, and is eager to move up into Special Ops. His superior assures him he'll get his chance, but for right now he is needed to secure a hidden transmission chip in the French Foreign Minister's office during a meeting with Ambassador Bennington. Reece doesn't believe he was given a chip, but is told it's in his left jacket pocket. Checking his jacket, he finds the chip there.Sitting in his apartment, Reece examines the chip. He is interrupted by a knock on his door. It's his girlfriend, Caroline (Kasia Smutnak) (pronounced Cah-roll-een, the 'ine' being pronounced like in the word 'magazine'). Caroline kisses Reece and tells him she has a surprise. She sits him in a chair and makes him keep his back to her. He can hear her undressing and changing into a different outfit. When she tells him to look, his jaw drops at the sight of her wearing a sexy strapless dress. He thinks he recognizes the fabric, and Caroline tells him she made it out of their bedroom curtains-- Caroline is a clothing designer. The two of them quickly start to undress as they head into the bedroom to make out.Reece arrives the next day at the conference site to give Bennington a summary of what is intended to be discussed at the meeting. Bennington invites Reece to attend the meeting with him.During the meeting, Reece discreetly takes the chip (disguising it by putting a piece of gum in his mouth and offering another piece to the Minister's secretary) and tries to put it under the lampstand beside his seat, using his chewing gum as an adhesive. However, the gum fails to hold and twice it falls back to the floor in plain sight. Frustrated, and barely managing to keep the chip hidden, as a diversion Reece finally questions the Foreign Minister (Eric Godon) about his having several Goyas in his office. The Minister says he does, and offers to show them to Bennington, who is very interested in Goya art. As Bennington accompanies the Minister and secretary to see the Goyas, leaving Reece alone in the meeting room, Reece takes the stapler from the Minister's desk and staples the chip to the underside of the desk... but accidentally leaves the stapler open as he exits.Arriving home that evening, Reece is disquieted as the lights in the hallway go out. He finds what looks like a trail of blood leading to a door out onto the roof of the building. Grabbing a broom left in

Ex Output:
What are the terrorists targeting?


Ex Input:
This article explains what methicillin-resistant Staphylococcus aureus (MRSA) is, how it is spread and what the real challenges are in healthcare settings in the UK. It explores the different strains of MRSA and points out the main ways to control their spread. It is intended to be a reference source for all nurses.

Ex Output:

What is MRSA?