This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.

[Q]: Passage: The Bell Telephone Company was created in 1877, and by 1886, more than 150,000 people in the U.S. owned telephones. Bell Company engineers made numerous other improvements to the telephone, which emerged as one of the most successful products ever. In 1879, the Bell company acquired Edison's patents for the carbon microphone from Western Union. This made the telephone practical for longer distances, and it was no longer necessary to shout to be heard at the receiving telephone. Question: What addition let people stop yelling into the telephone?
[A]: carbon microphone

[Q]: Passage: The structure known as "Virgil's tomb" is found at the entrance of an ancient Roman tunnel (also known as "grotta vecchia") in Piedigrotta, a district two miles from the centre of Naples, near the Mergellina harbor, on the road heading north along the coast to Pozzuoli. While Virgil was already the object of literary admiration and veneration before his death, in the Middle Ages his name became associated with miraculous powers, and for a couple of centuries his tomb was the destination of pilgrimages and veneration. Question: In which district is "Virgil's tomb" located?
[A]: Piedigrotta

[Q]: Passage: New York City is home to hundreds of cultural institutions and historic sites, many of which are internationally known. Museum Mile is the name for a section of Fifth Avenue running from 82nd to 105th streets on the Upper East Side of Manhattan, in an area sometimes called Upper Carnegie Hill. The Mile, which contains one of the densest displays of culture in the world, is actually three blocks longer than one mile (1.6 km). Ten museums occupy the length of this section of Fifth Avenue. The tenth museum, the Museum for African Art, joined the ensemble in 2009, however its Museum at 110th Street, the first new museum constructed on the Mile since the Guggenheim in 1959, opened in late 2012. In addition to other programming, the museums collaborate for the annual Museum Mile Festival, held each year in June, to promote the museums and increase visitation. Many of the world's most lucrative art auctions are held in New York City. Question: When was the Guggenheim built?
[A]:
1959