Input: 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.
"When did the standard approach to energy momentum become criticized?" is "1917"?

OPTIONS:
- no
- yes
Output: yes

Input: What if you could drain all of Earths oceans? What would it look like? You might be really surprised. You see that the surface has two main features. It has continents and ocean basins. Continents are large land areas. These are the areas that are mostly above sea level. Ocean basins extend from the edges of continents. They include the ocean floor and Earths deep ocean trenches. You will also notice the ocean floor is not flat. It too has many Continents are much older than ocean basins. Some rocks on the continents are billions of years old. Ocean basins may only be millions of years old. Because the continents are so old, a lot has happened to them! As we view the land around us, we see landforms. Landforms are physical features on Earths surface. These features change over time, but how? There are actually two types of forces at work.

Does the response "Continents are large land areas, that are mostly above sea level" correctly answer the question "What are continents?"?

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- yes
***
Output: yes

Flowing water causes sediment to move. Flowing water can erode both rocks and soil. You have already learned that materials can dissolve in water. With enough time, even rocks can be dissolved by water. This process happens really slowly. It may take over a million years to dissolve a rock. It doesnt matter how big the rock is. With enough time, flowing water can dissolve it. Moving water also has the ability to move small pieces of rock and soil. How can water move a rock? Doesnt it need energy? Of course, water gets its energy because it is moving. Moving water has kinetic energy. Things that have more energy can do more work. When water stops moving it will have no energy. It will no longer be able to move the rock and soil. When this happens the rock and soil will settle to the bottom of the calm water. Scientists call this process deposition.

Question: "What happens when water stops moving?"

OPTIONS:
- no
- yes

Answer: "It gain energy"

Response: no

Backers of Legal Aid services for the poor are pushing a measure that would increase court filing fees in Kentucky to raise money for the program, which faces steep funding cuts. The proposed bill, sponsored by Rep. Charles Geveden, D-Wickliffe, would double the portion of the fee that goes to Legal Aid -- in district court to $10 from $5 and in circuit court to $20 from $10. Kentucky's current fee for filing a case in district court is $50.50, and in circuit court $108. The increase still would leave Kentucky's filing fee costs below those of surrounding states and would raise about $1.3 million a year -- almost enough to replace what Legal Aid is losing from federal and other sources, said Jamie Hamon, executive director of the Access to Justice Foundation, a state poverty law resource center in Lexington. Geveden said his measure appears to be the only potential source of money for the program, which is being forced to lay off workers and close offices around the state. Geveden said he's concerned because federal funding hasn't increased in recent years, and states with increased poverty are taking a greater share of the money. ''If you don't come up with the money somewhere, legal services to people in need will diminish or go away,'' he said. Hamon said the proposed bill has attracted a number of co-sponsors, and Legal Aid backers are hoping to get it passed in the upcoming legislative session. Hamon said she knows fee increases aren't popular with lawmakers but hopes they realize the crisis Legal Aid is facing. ''A lot of poor people are not going to get served,'' she said. The measure has the endorsement of the Kentucky Bar Association. The association's board of governors voted unanimously last month to back the bill, said KBA President Stephen Catron, a Bowling Green lawyer. Legal Aid ''has been a godsend to a great number of people in this state,'' Catron said. ''We simply must find a way to provide those services to the public.'' Larry York, executive director of Appalachian Regional Defense Fund, which provides Legal Aid services in 37 Eastern Kentucky counties and is a KBA board member, said he hopes the measure is approved. ''It would really offset the current cuts,'' he said.

Question: "What organization has endorses the measure to increase legal aid fees?"

Response: "Kentucy Bar Association"
OPTIONS:
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- yes

A: yes

Problem: The cute red ball rolled over to the blue ball and said hello. The blue ball was scared and went to cry to the green ball. The green ball laughed at the blue ball. Then the green ball told the orange ball that blue ball was stupid. Most felt this was not good to do and so they punished the green ball by taking away all his air. From that day on everyone saw the air-less green ball and knew that they could not do or say any bad things. This is how the trouble started. The purple ball used the fear of everyone to become the leader that they all feared. The purple ball was mean to everyone. Until one day the red ball spoke up and got all the other colored balls together and they took the air from the purple ball and put it in the green ball. Sadly, the green ball had been without air for too long and was dead.

Question: "Who was the leader the balls feared?"

Answer: "The green ball"

OPTIONS:
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- yes
Answer: no

Problem: At 8:38, Ong told Gonzalez that the plane was flying erratically again. Around this time Sweeney told Woodward that the hijackers were Middle Easterners, naming three of their seat numbers. One spoke very little English and one spoke excellent English. The hijackers had gained entry to the cockpit, and she did not know how. The aircraft was in a rapid descent. At 8:41, Sweeney told Woodward that passengers in coach were under the impression that there was a routine medical emergency in first class. Other flight attendants were busy at duties such as getting medical supplies while Ong and Sweeney were reporting the events. At 8:41, in American's operations center, a colleague told Marquis that the air traffic controllers declared Flight 11 a hijacking and "think he's [American 11] headed toward Kennedy [airport in New York City]. They're moving everybody out of the way. They seem to have him on a primary radar. They seem to think that he is descending." At 8:44, Gonzalez reported losing phone contact with Ong. About this same time Sweeney reported to Woodward, "Something is wrong. We are in a rapid descent . we are all over the place." Woodward asked Sweeney to look out the window to see if she could determine where they were.

Question: "What important information was Marquis told in the American Operations center by a colleague at 8:41?"

Answer: "The plane was going to crash land"

OPTIONS:
- no
- yes
Answer:
no