In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.

Example Input: Passage: Sir John Barbirolli, CH (2 December 1899 – 29 July 1970), né Giovanni Battista Barbirolli, was a British conductor and cellist. He is remembered above all as conductor of the Hallé Orchestra in Manchester, which he helped save from dissolution in 1943 and conducted for the rest of his life. Earlier in his career he was Arturo Toscanini's successor as music director of the New York Philharmonic, serving from 1936 to 1943. He was also chief conductor of the Houston Symphony from 1961 to 1967, and was a guest conductor of many other orchestras, including the BBC Symphony Orchestra, London Symphony Orchestra, the Philharmonia, the Berlin Philharmonic and the Vienna Philharmonic, with all of which he made recordings.
Born in London of Italian and French parentage, Barbirolli grew up in a family of professional musicians.  After starting out as a cellist, he was given the chance to conduct, from 1926 with the British National Opera Company, and then with Covent Garden's touring company. On taking up the conductorship of the Hallé he had less opportunity to work in the opera house, but in the 1950s he conducted productions of works by Verdi, Wagner, Gluck, and Puccini at Covent Garden with such success that he was invited to become the company's permanent musical director, an invitation he declined. Late in his career he made several recordings of operas, of which his 1967 set of Puccini's Madama Butterfly for EMI is probably the best known.
Both in the concert hall and on record, Barbirolli was particularly associated with the music of English composers such as Elgar, Delius and Vaughan Williams. His interpretations of other late romantic composers, such as Mahler and Sibelius, as well as of earlier classical composers, including Schubert, are also still admired.
Example Output: What was the name of the company that Barbirolli declined an invitation to become the music director?

Example Input: Passage: A tsunami is an unusual form of wave caused by an infrequent powerful event such as an underwater earthquake or landslide, a meteorite impact, a volcanic eruption or a collapse of land into the sea. These events can temporarily lift or lower the surface of the sea in the affected area, usually by a few feet. The potential energy of the displaced seawater is turned into kinetic energy, creating a shallow wave, a tsunami, radiating outwards at a velocity proportional to the square root of the depth of the water and which therefore travels much faster in the open ocean than on a continental shelf. In the deep open sea, tsunamis have wavelengths of around 80 to 300 miles (130 to 480 km), travel at speeds of over 600 miles per hour (970 km/hr) and usually have a height of less than three feet, so they often pass unnoticed at this stage. In contrast, ocean surface waves caused by winds have wavelengths of a few hundred feet, travel at up to 65 miles per hour (105 km/h) and are up to 45 feet (14 metres) high.A trigger event on the continental shelf may cause a local tsunami on the land side and a distant tsunami that travels out across the ocean. The energy of the wave is dissipated only gradually, but is spread out over the wave front, so as the wave radiates away from the source, the front gets longer and the average energy reduces, so distant shores will, on average, be hit by weaker waves. However, as the speed of the wave is controlled by the water depth, it does not travel at the same speed in all directions, and this affects the direction of the wave front - an effect known as refraction - which can focus the strength of the advancing tsunami on some areas and weaken it in others according to undersea topography.
As a tsunami moves into shallower water its speed decreases, its wavelength shortens and its amplitude increases enormously, behaving in the same way as a wind-generated wave in shallow water, but on a vastly greater scale.  Either the trough or the crest of a tsunami can arrive at the coast first. In the former case, the sea draws back and leaves subtidal areas close to the shore exposed which provides a useful warning for people on land. When the crest arrives, it does not usually break but rushes inland, flooding all in its path. Much of the destruction may be caused by the flood water draining back into the sea after the tsunami has struck, dragging debris and people with it. Often several tsunami are caused by a single geological event and arrive at intervals of between eight minutes and two hours. The first wave to arrive on shore may not be the biggest or most destructive.  Occasionally, a tsunami may transform into a bore, typically in a shallow bay or an estuary.
Example Output: What two types of tsunami's can a trigger event on the continental shelf cause?

Example Input: Passage: Penetration testing involves inserting a probe into snow to determine the snow's mechanical properties.  Experienced snow surveyors can use an ordinary ski pole to test snow hardness by pushing it into the snow; the results are recorded based on the change in resistance felt as the pole is inserted.  A more scientific tool, invented in the 1930s but still in widespread use, is a ram penetrometer.  This takes the form of a rod with a cone at the lower end.  The upper end of the rod passes through a weight that is used as a hammer; the weight is lifted and released, and hits an anvil—a ledge around the rod which it cannot pass—which drives the rod into the snow.  To take a measurement, the rod is placed on the snow and the hammer is dropped one or more times; the resulting depth of penetration is recorded.  In soft snow a lighter hammer can be used to obtain more precise results; hammer weights range from 2 kg down to 0.1 kg.  Even with lighter hammers, ram penetrometers have difficulty distinguishing thin layers of snow, which limits their usefulness with regard to avalanche studies, since thin and soft layers are often involved in avalanche formation.Two lightweight tools are in wide use that are more sensitive than ram penetrometers.  A snow micro-penetrometer uses a motor to drive a rod into snow, measuring the force required; it is sensitive to 0.01–0.05 newtons, depending on the snow strength.  A SABRE probe consists of a rod that is inserted manually into snow; accelerometer readings are then used to determine the penetrative force needed at each depth, and stored electronically.For testing dense polar snow, a cone penetrometer test (CPT) is use, based on the equivalent devices used for soil testing.  CPT measurements can be used in hard snow and firn to depths of 5–10 m.
Example Output:
What is the full name of the test whose measurements can be used in hard snow and firn to depths of 5–10 m?