instruction:
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.
question:
The last opus number that Chopin himself used was 65, allocated to the Cello Sonata in G minor. He expressed a deathbed wish that all his unpublished manuscripts be destroyed. At the request of the composer's mother and sisters, however, his musical executor Julian Fontana selected 23 unpublished piano pieces and grouped them into eight further opus numbers (Opp. 6673), published in 1855. In 1857, 17 Polish songs that Chopin wrote at various stages of his life were collected and published as Op. 74, though their order within the opus did not reflect the order of composition.
answer:
What was the last number Chopin gave to an opus?

question:
In 1914, advertising executive Albert Lasker obtained a large block of the club's shares and before the 1916 season assumed majority ownership of the franchise. Lasker brought in a wealthy partner, Charles Weeghman, the proprietor of a popular chain of lunch counters who had previously owned the Chicago Whales of the short-lived Federal League. As principal owners, the pair moved the club from the West Side Grounds to the much newer Weeghman Park, which had been constructed for the Whales only two years earlier, where they remain to this day. The Cubs responded by winning a pennant in the war-shortened season of 1918, where they played a part in another team's curse: the Boston Red Sox defeated Grover Cleveland Alexander's Cubs four games to two in the 1918 World Series, Boston's last Series championship until 2004.
answer:
Who obtained a large block of the Cub's shares in 1914?

question:
In 1987, as China began opening to Western capital investment, Spielberg shot the first American film in Shanghai since the 1930s, an adaptation of J. G. Ballard's autobiographical novel Empire of the Sun, starring John Malkovich and a young Christian Bale. The film garnered much praise from critics and was nominated for several Oscars, but did not yield substantial box office revenues. Reviewer Andrew Sarris called it the best film of the year and later included it among the best films of the decade. Spielberg was also a co-producer of the 1987 film *batteries not included.
answer:
Until the 1980s, when had an American film last been shot in Shanghai?