This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.

Q: Elizabeth's only sibling, Princess Margaret, was born in 1930. The two princesses were educated at home under the supervision of their mother and their governess, Marion Crawford, who was casually known as "Crawfie". Lessons concentrated on history, language, literature and music. Crawford published a biography of Elizabeth and Margaret's childhood years entitled The Little Princesses in 1950, much to the dismay of the royal family. The book describes Elizabeth's love of horses and dogs, her orderliness, and her attitude of responsibility. Others echoed such observations: Winston Churchill described Elizabeth when she was two as "a character. She has an air of authority and reflectiveness astonishing in an infant." Her cousin Margaret Rhodes described her as "a jolly little girl, but fundamentally sensible and well-behaved".

A: Who was Elizabeth only sibling?P
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Q: During the December 2014 press conference announcing the start of filming, Aston Martin and Eon unveiled the new DB10 as the official car for the film. The DB10 was designed in collaboration between Aston Martin and the filmmakers, with only 10 being produced especially for Spectre as a celebration of the 50th anniversary of the company's association with the franchise. Only eight of those 10 were used for the film, however; the remaining two were used for promotional work. After modifying the Jaguar C-X75 for the film, Williams F1 carried the 007 logo on their cars at the 2015 Mexican Grand Prix, with the team playing host to the cast and crew ahead of the Mexican premiere of the film.

A: Which companies revealed Spectre's official car?
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Q: In February 1974, the British Prime Minister, Edward Heath, advised the Queen to call a general election in the middle of her tour of the Austronesian Pacific Rim, requiring her to fly back to Britain. The election resulted in a hung parliament; Heath's Conservatives were not the largest party, but could stay in office if they formed a coalition with the Liberals. Heath only resigned when discussions on forming a coalition foundered, after which the Queen asked the Leader of the Opposition, Labour's Harold Wilson, to form a government.

A:
When did Edward Heath ask Elizabeth to call a general election?
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