Sound waves are mechanical waves. They can travel only through matter. They cannot travel through empty space. This was demonstrated in the 1600s by a scientist named Robert Boyle. Boyle placed a ticking clock in a sealed glass jar. The clock could be heard ticking through the air and glass of the jar. Then Boyle pumped the air out of the jar. The clock was still running, but the ticking could not be heard. Thats because the sound couldnt travel without air particles to transfer the sound energy. Is there any other place where sound cannot be heard? Here is a hint: is there any other place that does not have air molecules? Thats right, in space sound cannot be transferred. So can astronauts hear each other? Yes, they can, because they are in enclosed space stations or pressurized suits.In both cases, they are surrounded by air molecules. If they left their space ship and did not use their electronics, they would not be able to hear each other. Next time you watch a science fiction movie, think about this factoid. When spaceships are destroyed by hostile alien beings, there would be no sound heard. Sound waves can travel through many kinds of matter.

Question: "What can sound waves move through?"

Response: "vacuum"
OPTIONS:
- no
- yes

A: no

Problem: 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 .

Question: "Who gives the younger sister a headband and where did they get it?"

Answer: "Christina"

OPTIONS:
- no
- yes
Answer: no

Question:
The second major point on which the principals had agreed on March 10 was the need to crack down on terrorist organizations and curtail their fund-raising. The embassy bombings of 1998 had focused attention on al Qaeda's finances. One result had been the creation of an NSC-led interagency committee on terrorist financing. On its recommendation, the President had designated Bin Laden and al Qaeda as subject to sanctions under the International Emergency Economic Powers Act. This gave theTreasury Department's Office of Foreign Assets Control (OFAC) the ability to search for and freeze any Bin Laden or al Qaeda assets that reached the U.S. financial system. But since OFAC had little information to go on, few funds were frozen. In July 1999, the President applied the same designation to the Taliban for harboring Bin Laden. Here, OFAC had more success. It blocked more than $34 million in Taliban assets held in U.S. banks. Another $215 million in gold and $2 million in demand deposits, all belonging to the Afghan central bank and held by the Federal Reserve Bank of New York, were also frozen. After October 1999, when the State Department formally designated al Qaeda a "foreign terrorist organization," it became the duty of U.S. banks to block its transactions and seize its funds. Neither this designation nor UN sanctions had much additional practical effect; the sanctions were easily circumvented, and there were no multilateral mechanisms to ensure that other countries' financial systems were not used as conduits for terrorist funding. Attacking the funds of an institution, even the Taliban, was easier than finding and seizing the funds of a clandestine worldwide organization like al Qaeda. Although the CIA's Bin Laden unit had originally been inspired by the idea of studying terrorist financial links, few personnel assigned to it had any experience in financial investigations. Any terrorist-financing intelligence appeared to have been collected collaterally, as a consequence of gathering other intelligence. This attitude may have stemmed in large part from the chief of this unit, who did not believe that simply following the money from point A to point B revealed much about the terrorists' plans and intentions. As a result, the CIA placed little emphasis on terrorist financing. Nevertheless, the CIA obtained a general understanding of how al Qaeda raised money. After reading the above, is "Al Qaeda was a clandestine worldwide organization" the correct answer to the question "Why did the OFAC have little information about the financing of al Qaeda?"? OPTIONS:
- no
- yes

Answer:
yes

Input: According to the radar reconstruction, American 77 reemerged as a primary target on Indianapolis Center radar scopes at 9:05, east of its last known position. The target remained in Indianapolis Center's airspace for another six minutes, then crossed into the western portion of Washington Center's airspace at 9:10. As Indianapolis Center continued searching for the aircraft, two managers and the controller responsible for American 77 looked to the west and southwest along the flight's projected path, not east-where the aircraft was now heading. Managers did not instruct other controllers at Indianapolis Center to turn on their primary radar coverage to join in the search for American 77. In sum, Indianapolis Center never saw Flight 77 turn around. By the time it reappeared in primary radar coverage, controllers had either stopped looking for the aircraft because they thought it had crashed or were looking toward the west. Although the Command Center learned Flight 77 was missing, neither it nor FAA headquarters issued an all points bulletin to surrounding centers to search for primary radar targets. American 77 traveled undetected for 36 minutes on a course heading due east for Washington, D.C. By 9:25, FAA's Herndon Command Center and FAA headquarters knew two aircraft had crashed into the World Trade Center. They knew American 77 was lost. At least some FAA officials in Boston Center and the New England Region knew that a hijacker on board American 11 had said "we have some planes." Concerns over the safety of other aircraft began to mount. A manager at the Herndon Command Center asked FAA headquarters if they wanted to order a "nationwide ground stop." While this was being discussed by executives at FAA headquarters, the Command Center ordered one at 9:25. The Command Center kept looking for American 77. At 9:21, it advised the Dulles terminal control facility, and Dulles urged its controllers to look for primary targets. At 9:32, they found one. Several of the Dulles controllers "observed a primary radar target tracking eastbound at a high rate of speed" and notified Reagan National Airport. FAA personnel at both Reagan National and Dulles airports notified the Secret Service.

Does the response "Found one" correctly answer the question "At 9:32, what did they find?"?

OPTIONS:
- no
- yes
***
Output:
yes