Question: One use of the term "computer security" refers to technology that is used to implement secure operating systems. In the 1980s the United States Department of Defense (DoD) used the "Orange Book" standards, but the current international standard ISO/IEC 15408, "Common Criteria" defines a number of progressively more stringent Evaluation Assurance Levels. Many common operating systems meet the EAL4 standard of being "Methodically Designed, Tested and Reviewed", but the formal verification required for the highest levels means that they are uncommon. An example of an EAL6 ("Semiformally Verified Design and Tested") system is Integrity-178B, which is used in the Airbus A380 and several military jets.
Is there an answer to this question: What is an example of a system that uses the Orange Book Standards?

Answer: unanswerable

Question: The name Shell is linked to The "Shell" Transport and Trading Company. In 1833, the founder's father, Marcus Samuel, founded an import business to sell seashells to London collectors. When collecting seashell specimens in the Caspian Sea area in 1892, the younger Samuel realised there was potential in exporting lamp oil from the region and commissioned the world's first purpose-built oil tanker, the Murex (Latin for a type of snail shell), to enter this market; by 1907 the company had a fleet. Although for several decades the company had a refinery at Shell Haven on the Thames, there is no evidence of this having provided the name.
Is there an answer to this question: The company operated a refinery on what river for several decades?

Answer: Thames

Question: Numerous recordings of Chopin's works are available. On the occasion of the composer's bicentenary, the critics of The New York Times recommended performances by the following contemporary pianists (among many others): Martha Argerich, Vladimir Ashkenazy, Emanuel Ax, Evgeny Kissin, Murray Perahia, Maurizio Pollini and Krystian Zimerman. The Warsaw Chopin Society organizes the Grand prix du disque de F. Chopin for notable Chopin recordings, held every five years.
Is there an answer to this question: How often is the Grand prix du disque de F. Chopin for notable Chopin recordings held?

Answer: every five years.

Question: Houston was founded in 1836 on land near the banks of Buffalo Bayou (now known as Allen's Landing) and incorporated as a city on June 5, 1837. The city was named after former General Sam Houston, who was president of the Republic of Texas and had commanded and won at the Battle of San Jacinto 25 miles (40 km) east of where the city was established. The burgeoning port and railroad industry, combined with oil discovery in 1901, has induced continual surges in the city's population. In the mid-twentieth century, Houston became the home of the Texas Medical Centerthe world's largest concentration of healthcare and research institutionsand NASA's Johnson Space Center, where the Mission Control Center is located.
Is there an answer to this question: When was the City of Houston unincorporated?

Answer:
unanswerable