Problem: 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.

Question: "What target remained in Indianapolis Center's airspace, then crossed into the western portion of Washington Center's airspace at 9:10."

Answer: "The command center"

OPTIONS:
- no
- yes
Answer: no

Question:
Not until 1998 did al Qaeda undertake a major terrorist operation of its own, in large part because Bin Laden lost his base in Sudan. Ever since the Islamist regime came to power in Khartoum, the United States and other Western governments had pressed it to stop providing a haven for terrorist organizations. Other governments in the region, such as those of Egypt, Syria, Jordan, and even Libya, which were targets of some of these groups, added their own pressure. At the same time, the Sudanese regime began to change. Though Turabi had been its inspirational leader, General Omar al Bashir, president since 1989, had never been entirely under his thumb. Thus as outside pressures mounted, Bashir's supporters began to displace those of Turabi. The attempted assassination in Ethiopia of Egyptian President Hosni Mubarak in June 1995 appears to have been a tipping point. The would-be killers, who came from the Egyptian Islamic Group, had been sheltered in Sudan and helped by Bin Laden. When the Sudanese refused to hand over three individuals identified as involved in the assassination plot, the UN Security Council passed a resolution criticizing their inaction and eventually sanctioned Khartoum in April 1996. A clear signal to Bin Laden that his days in Sudan were numbered came when the government advised him that it intended to yield to Libya's demands to stop giving sanctuary to its enemies. Bin Laden had to tell the Libyans who had been part of his Islamic army that he could no longer protect them and that they had to leave the country. Outraged, several Libyan members of al Qaeda and the Islamic Army Shura renounced all connections with him. Bin Laden also began to have serious money problems. International pressure on Sudan, together with strains in the world economy, hurt Sudan's currency. Some of Bin Laden's companies ran short of funds. As Sudanese authorities became less obliging, normal costs of doing business increased. Saudi pressures on the Bin Laden family also probably took some toll. In any case, Bin Laden found it necessary both to cut back his spending and to control his outlays more closely. After reading the above, is "Because bin ladin had begun to have money problems" the correct answer to the question "Why did several Libyan members of al Qaeda renounce all connections with Bin Laden?"? OPTIONS:
- no
- yes

Answer:
no

Input: 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.
"How did Robert Boyle prove how sound waves travel?" is "He placed a ticking clock in a jar and then removed the air from the jar."?

OPTIONS:
- no
- yes
Output: yes

Input: (CNN) -- Sevilla have sacked coach Manolo Jimenez after their disappointing home draw to bottom-club Xerez on Tuesday extended the club's winless run to seven games. Despite lying fifth in the Spanish Primera Liga table, Sevilla were knocked out of the lucrative European Champions League by Russian side CSKA Moscow last week. Jimenez had also secured a Copa del Rey final against Atletico Madrid but it wasn't enough to save the 46-year-old's job. The club's sporting director Ramon Rodriguez admitted the decision had been difficult but said he had "done what I had to." He told the club's official Web site: "It was an unavoidable situation and we had to find a solution, and the pain that it brings. "Tuesday was the end of the story but the decision comes from the image and dynamics of the team. Without doubt we are grateful to Manolo. He is an excellent professional, he has made all this possible and impossible. However it is obvious that he could not get a response out of the team. "Fortunately we believe that there is time. The growth and the ambition of the club is shown in the change of the manager. We are fighting for important things." Xerez's injury-time equaliser on Tuesday meant Sevilla's last league success was against Real Mallorca back in February. Ironically, it is Mallorca who occupy the much-coveted fourth spot in the table that guarantees Champions League football next season. Jimenez took charge in October 2007 when former coach Juande Ramos left to take over at English Premier League team Tottenham.
"Despite lying fifth in the Spanish Primera Liga table who had their coach sacked?" is "CSKA Russia"?

OPTIONS:
- no
- yes
Output:
no