Based on the information present in the given passage, you need to write a correct answer to the given question. A correct answer is one that correctly and completely answers the question. Do not write answers that address the question partially or incorrectly. The correct answer must be contained in the given paragraph.

[Q]: Paragraph- Sent 1: How can you describe your location?
Sent 2: You might use a familiar system.
Sent 3: You might say, 'I live at 1234 Main Street, Springfield, Ohio.' You could also say, 'I live right behind the Elementary School.' This method uses the school as a point of reference.
Sent 4: Another example is, I am at the corner of Maple Street and Main Street. Both streets may be a good reference for anyone living in your town.
Sent 5: Scientists must be able to pinpoint a feature they are studying.
Sent 6: Scientists use a special system to describe locations.
Sent 7: They use latitude and longitude as a reference.
Sent 8: Lines of latitude and longitude form a grid.
Sent 9: You may have used a grid system while doing graphing.
Sent 10: This grid is centered on a reference point.
Sent 11: Zero latitude is the equator.
Sent 12: Lines of latitude run east to west.
Sent 13: They divide the Earth from North to South.
Sent 14: Lines of longitude run from north to south.
Sent 15: They divide the Earth from East to West.
Sent 16: Zero longitude runs through Greenwich, England.
Sent 17: You may have heard the term, Greenwich Mean Time, or GMT.
Sent 18: The system of latitude and longitude works well for objects that do not move. 
Question: What are some ways besides latitude and longitude in which people describe location?.
[A]: Using a landmark or cross streets as a point of reference.


[Q]: Paragraph- Sent 1: After the August missile strikes, diplomatic options to press the Taliban seemed no more promising than military options.
Sent 2: The United States had issued a formal warning to the Taliban, and also to Sudan, that they would be held directly responsible for any attacks on Americans, wherever they occurred, carried out by the  Bin Laden network as long as they continued to provide sanctuary to it.
Sent 3: For a brief moment, it had seemed as if the August strikes might have shocked the Taliban into thinking of giving up  Bin Laden.
Sent 4: On August 22, the reclusive Mullah Omar told a working-level State Department official that the strikes were counterproductive but added that he would be open to a dialogue with the United States on  Bin Laden's presence in Afghanistan.
Sent 5: Meeting in Islamabad with William Milam, the U.S. ambassador to Pakistan, Taliban delegates said it was against their culture to expel someone seeking sanctuary but asked what would happen to  Bin Laden should he be sent to Saudi Arabia.
Sent 6: Yet in September 1998, when the Saudi emissary, Prince Turki, asked Mullah Omar whether he would keep his earlier promise to expel  Bin Laden, the Taliban leader said no.
Sent 7: Both sides shouted at each other, with Mullah Omar denouncing the Saudi government.
Sent 8: Riyadh then suspended its diplomatic relations with the Taliban regime.
Sent 9: (Saudi Arabia, Pakistan, and the United Arab Emirates were the only countries that recognized the Taliban as the legitimate government of Afghanistan.) Crown Prince Abdullah told President Clinton and Vice President Gore about this when he visited Washington in late September.
Sent 10: His account confirmed reports that the U.S. government had received independently.
Sent 11: Other efforts with the Saudi government centered on improving intelligence sharing and permitting U.S. agents to interrogate prisoners in Saudi custody.
Sent 12: The history of such cooperation in 1997 and 1998 had been strained.
Sent 13: Several officials told us, in particular, that the United States could not get direct access to an important al Qaeda financial official, Madani al Tayyib, who had been detained by the Saudi government in 1997.67Though U.S. officials repeatedly raised the issue, the Saudis provided limited information.
Sent 14: In his September 1998 meeting with Crown Prince Abdullah, Vice President Gore, while thanking the Saudi government for their responsiveness, renewed the request for direct U.S. access to Tayyib.
Sent 15: The United States never obtained this access.
Sent 16: An NSC staff-led working group on terrorist finances asked the CIA in November 1998 to push again for access to Tayyib and to see "if it is possible to elaborate further on the ties between Usama bin Ladin and prominent individuals in Saudi Arabia, including especially the  Bin Laden family."Sent 17: One result was two NSC-led interagency trips to Persian Gulf states in 1999 and 2000.
Sent 18: During these trips the NSC, Treasury, and intelligence representatives spoke with Saudi officials, and later interviewed members of the  Bin Laden family, about Usama's inheritance. 
Question: Who was the US trying to contact during strained Saudi Relations in 1997, when they were denied the opportunity to question detainees?.
[A]: Madani al Tayyib.


[Q]: Paragraph- Sent 1: Rough surfaces create more friction than smooth surfaces.
Sent 2: Thats why cars have tires.
Sent 3: Its also why we use rubber mats in areas that might get wet.
Sent 4: In your bathtub, you may even use No-Slip tape.
Sent 5: No-slip is another way of saying the items has a lot of friction.
Sent 6: In Figure 1.9, the blades of the skates are very smooth.
Sent 7: Thats why you cant slide across ice with shoes.
Sent 8: The soles of your shoes are much rougher than skates.
Sent 9: The rougher surface of shoes causes more friction and slows you down.
Sent 10: Heavier objects also have more friction.
Sent 11: A heavy object presses down with more force.
Sent 12: The surfaces are held together more tightly.
Sent 13: This makes the surfaces harder to slide past each other.
Sent 14: Did you ever try to push something heavy across the floor?
Sent 15: Heavy objects are much harder to push than light objects. 
Question: Why do heavier objects have more friction?.
[A]:
A heavy object presses down with more force. The surfaces are held together more tightly, making the surfaces harder to slide past each other.


