input: Sound barrier

Although Concorde and the Tu-144 were the first aircraft to carry commercial passengers at supersonic speeds, they were not the first or only commercial airliners to break the sound barrier. On 21 August 1961, a Douglas DC-8 broke the sound barrier at Mach 1.012 or 1,240 km/h (776.2 mph) while in a controlled dive through 41,088 feet (12,510 m). The purpose of the flight was to collect data on a new leading-edge design for the wing. A China Airlines 747 may have broken the sound barrier in an unplanned descent from 41,000 ft (12,500 m) to 9,500 ft (2,900 m) after an in-flight upset on 19 February 1985. It also reached over 5g.

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can a commercial jet break the sound barrier
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output: yes
Question: Sometime later, Arthur's ship comes across the lifeboat and finds the three unconscious but still breathing. The arita branch is now bare save for one berry. Arthur asks, ''Are they dead?'' and the captain replies, ''No, sir. They are asleep.'' The ambiguous ending leaves it uncertain whether or not they can be revived. do the characters die at the end of blue lagoon

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Answer: no
IN: King Harald V of Norway, Queen Elizabeth II of the United Kingdom, her husband, the Duke of Edinburgh, Queen Margrethe II of Denmark and King Felipe VI of Spain are all descended from both Queen Victoria and King Christian IX. The first two monarchs are great-grandchildren of the aforementioned union between Alexandra of Denmark (daughter of King Christian IX) and Edward VII (son of Queen Victoria). Harald V of Norway is actually descended from Christian IX three ways, twice through his father and once through his mother. Prince Philip, Duke of Edinburgh and his wife Elizabeth II are second cousins once removed through Christian IX and also third cousins as they are both great-great-grandchildren of Victoria. Margrethe II of Denmark is descended once each from Victoria and Christian IX. She is also a first cousin to Carl XVI Gustaf of Sweden through Victoria's granddaughter Princess Margaret of Connaught. Felipe VI is descended from Victoria three ways and Christian IX twice. His father, King Juan Carlos I, is descended from Victoria and not Christian IX, while Juan Carlos' consort, Queen Sofia, is twice a descendant of Victoria and twice a great-great-granddaughter of Christian IX.
is the spanish royal family related to the british royal family?

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OUT: yes
What's the best answer to this question: is the bourne series based on a true story?

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Answer: no
Text: Their flexibility and cost-effectiveness make mines attractive to the less powerful belligerent in asymmetric warfare. The cost of producing and laying a mine is usually between 0.5% and 10% of the cost of removing it, and it can take up to 200 times as long to clear a minefield as to lay it. Parts of some World War II naval minefields still exist because they are too extensive and expensive to clear. It is possible for some of these 1940s-era mines to remain dangerous for many years to come.

Question: are there any mines left in the sea?

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Answer: yes
Problem: Text: In the U.S. a certificate of incorporation is usually used as an alternative description of a corporation's articles of incorporation. The certificate of incorporation, or articles of incorporation, form a major constituent part of the constitutional documents of the corporation. In English and Commonwealth legal systems, a certificate of incorporation is usually a simple certificate issued by the relevant government registry as confirmation of the due incorporation and valid existence of the company.

Question: is a certificate of incorporation the same as articles of incorporation?

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A:
yes