Question: A week after the implementation of the no-fly zone, NATO announced that it would be enforced. On 30 April a NATO airstrike killed Gaddafi's sixth son and three of his grandsons in Tripoli, though Gaddafi and his wife were unharmed. Western officials remained divided over whether Gaddafi was a legitimate military target under the U.N. Security Council resolution. U.S. Secretary of Defense Robert Gates said that NATO was "not targeting Gaddafi specifically" but that his command-and-control facilities were legitimate targetsincluding a facility inside his sprawling Tripoli compound that was hit with airstrikes on 25 April.
Is there an answer to this question: What city did NATO bomb on 25 April?

Answer: Tripoli

Question: It established a colony at Jamestown, Virginia, in 1607. Two years later, a flotilla of seven ships left England under the Company's Admiral, Sir George Somers, and the new Governor of Jamestown, Sir Thomas Gates, with several hundred settlers, food and supplies to relieve the colony of Jamestown. Somers had previous experience sailing with both Sir Francis Drake and Sir Walter Raleigh. The flotilla was broken up by a storm. As the flagship, the Sea Venture, was taking on water, Somers drove it onto Bermuda's reef and gained the shores safely with smaller boats all 150 passengers and a dog survived. (William Shakespeare's play The Tempest, in which the character Ariel refers to the "still-vex'd Bermoothes" (I.ii.229), is thought to have been inspired by William Strachey's account of this shipwreck.) They stayed 10 months, starting a new settlement and building two small ships to sail to Jamestown. The island was claimed for the English Crown, and the charter of the Virginia Company was later extended to include it.
Is there an answer to this question: Sir George Somers embarked on a mission to do what?

Answer: relieve the colony of Jamestown

Question: United States of America: The torch relay's North American leg occurred in San Francisco, California on April 9. On the day of the relay officials diverted the torch run to an unannounced route. The start was at McCovey Cove, where Norman Bellingham of the U.S. Olympic Committee gave the torch to the first torchbearer, Chinese 1992 Olympic champion swimmer Lin Li. The planned closing ceremony at Justin Herman Plaza was cancelled and instead, a ceremony was held at San Francisco International Airport, where the torch was to leave for Buenos Aires. The route changes allowed the run to avoid large numbers of China supporters and protesters against China. As people found out there would be no closing ceremony at Justin Herman Plaza, there were angry reactions. One demonstrator was quoted as saying that the route changes were an effort to "thwart any organized protest that had been planned." San Francisco Board of Supervisors President Aaron Peskin, a critic of Mayor Gavin Newsom, said that it was a "cynical plan to please the Bush State Department and the Chinese government because of the incredible influence of money." Newsom, on the other hand, said he felt it was in "everyone's best interest" and that he believed people had been "afforded the right to protest and support the torch" despite the route changes. Peter Ueberroth, head of the U.S. Olympic Committee, praised the route changes, saying, "The city of San Francisco, from a global perspective, will be applauded." People who saw the torch were surprised and cheered as shown from live video of CBS and NBC. The cost to the city for hosting the event was reported to be USD $726,400, nearly half of which has been recovered by private fundraising. Mayor Gavin Newsom said that "exponential" costs associated with mass arrests were avoided by his decision to change the route in consultation with police chief Heather Fong.
Is there an answer to this question: What was the date of the relay in the United States?

Answer: April 9.

Question: Vacuum is useful in a variety of processes and devices. Its first widespread use was in the incandescent light bulb to protect the filament from chemical degradation. The chemical inertness produced by a vacuum is also useful for electron beam welding, cold welding, vacuum packing and vacuum frying. Ultra-high vacuum is used in the study of atomically clean substrates, as only a very good vacuum preserves atomic-scale clean surfaces for a reasonably long time (on the order of minutes to days). High to ultra-high vacuum removes the obstruction of air, allowing particle beams to deposit or remove materials without contamination. This is the principle behind chemical vapor deposition, physical vapor deposition, and dry etching which are essential to the fabrication of semiconductors and optical coatings, and to surface science. The reduction of convection provides the thermal insulation of thermos bottles. Deep vacuum lowers the boiling point of liquids and promotes low temperature outgassing which is used in freeze drying, adhesive preparation, distillation, metallurgy, and process purging. The electrical properties of vacuum make electron microscopes and vacuum tubes possible, including cathode ray tubes. The elimination of air friction is useful for flywheel energy storage and ultracentrifuges.
Is there an answer to this question: Hight to ultra-high vacuums removes what obstruction?

Answer:
obstruction of air,