Washington The Iraqi government has agreed to let U.S. Rep. Tony Hall visit the country next week to assess a humanitarian crisis that has festered since the Gulf War of 1990, Hall's office said Monday. The Dayton Democrat, who has traveled to other crisis points including Sierra Leone and North Korea, will spend three days visiting hospitals and other facilities to seek understanding why aid has been ineffective in stemming malnourishment and other medical problems. Iraq has been under economic sanctions since the war ended, which some say have thwarted the country's ability to recover from the devastation of the bombing campaign. The Persian Gulf War destroyed much of the country's medical infrastructure, according to a report by the World Health Organization. In 1996 the WHO found that much of the population existed in a state of ''semi-starvation.'' Hall will be only the second member of Congress to travel in Iraq since the war, according to Hall's office. The last visitor was then-U.S. Rep. Bill Richardson of New Mexico, who went to help a pair of U.S. oilmen in diplomatic trouble. Hall flies to Amman, Jordan, on Friday, where he'll spend the night before driving to Iraq. Flights are not permitted into Iraq. Hall is to return to Washington on April 22. Story Filed By Cox Newspapers

Question: "Why is U.S. Rep. Tony Hall visiting Iraq?"

OPTIONS:
- no
- yes

Answer: "To help a pair of U.S. oilmen in diplomatic trouble"

Response: no

Energy often changes from one form to another. For example, the drummer transfers motion to sound energy. When the moving drumstick strikes the drum head, the drum starts to vibrate. The motion of the vibrating drum head creates the sound you hear. Any form of energy can change into any other form. Frequently, one form of energy changes into two or more different forms. Have you ever sat in front of a campfire? What are two things you notice? The fire creates light. It is also warm by the fire, meaning it creates heat. The energy of the fire comes from the stored energy in the wood. The wood contains chemical energy. As it burns, the chemical energy is changed into light and heat. Not all chemical energy changes produce light and heat. Our cars use gasoline as a fuel. Gasoline contains chemical energy. When our cars burn gasoline in their engines, it is converted into motion and heat. When energy changes forms, energy is conserved.

Question: "How is the sound of a vibrating drum produced by energy?"

Response: "Vibrating drum head"
OPTIONS:
- no
- yes

A: yes

Problem: General relativity includes a dynamical spacetime, so it is difficult to see how to identify the conserved energy and momentum. Noether's theorem allows these quantities to be determined from a Lagrangian with translation invariance, but general covariance makes translation invariance into something of a gauge symmetry. The energy and momentum derived within general relativity by Noether's presecriptions do not make a real tensor for this reason. Einstein argued that this is true for fundamental reasons, because the gravitational field could be made to vanish by a choice of coordinates. He maintained that the non-covariant energy momentum pseudotensor was in fact the best description of the energy momentum distribution in a gravitational field. This approach has been echoed by Lev Landau and Evgeny Lifshitz, and others, and has become standard. The use of non-covariant objects like pseudotensors was heavily criticized in 1917 by Erwin Schrodinger and others.

Question: "When did the standard approach to energy momentum become criticized?"

Answer: "1911"

OPTIONS:
- no
- yes
Answer: yes

Question:
Roger was a grasshopper. He loved to hop. He hopped everywhere by himself. One day when he was hopping around he bumped into a frog sitting on a log. The frog told him his name was Gilbert. Gilbert told Roger that it had been a long time since he bumped into anybody. Roger told him that since both grasshoppers and frogs like to jump they would make great friends. The next day they were hopping through a field and they saw something very strange. In a pond they saw a spider floating on a lily pad. The spider was very sad because he did not have any friends. Roger and Gilbert asked him why he didn't have any friends. The spider told them that everybody would scream and run away when they saw him. Roger and Gilbert told him that he didn't look scary to them and that he could come along with them if he wanted. So Sam the spider said yes, and the three of them began a life time friendship full of adventures. After reading the above, is "They had an adventurous life" the correct answer to the question "How did Roger and Gilbert act differently towards the spider than others had?"? OPTIONS:
- no
- yes

Answer:
no

Electric charge is a physical property. It occurs between particles or objects. It causes them to attract or repel each other. They do not even have to touch. This is unlike the typical push or pull you may be familiar with. All electric charge is based on the protons and electrons in atoms. A proton has a positive electric charge. An electron has a negative electric charge. Forces on Charged Objects Most atoms are balanced electrically. They have the same number of positive and negative charges. Therefore, the number of protons equals the number of electrons. Neutrons do not matter as they have no charge. When an object loses some electrons, it becomes positively charged. There are now more protons than electrons inside the atom. The lost electrons may remain free. Or, they may attach to another object. The new object now has more electrons than protons. It then becomes negatively charged.

Question: "What is the physical property that causes particles to attract or repel each other?"

OPTIONS:
- no
- yes

Answer: "A physical property occurs between particles or objects"

Response:
no