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.

Ex Input:
Passage: The open waters are inhabited by fishes, molluscs and crustaceans living on sea grasses or who prey on each other. The shallowness of the lagoon makes it suitable habitat for diving birds such as anhinga, cormorants and diving ducks. The bay also provides habitat for juvenile sea animals that have left the shelter of the mangrove belts.  Manatees frequent the quiet waters of the bay. The bay has a year-round population of double-crested cormorants. Winter residents include northern gannets, American white pelicans and common loons. The bay also has a resident population of common bottlenose dolphins.Biscayne Bay is a shallow lagoon with little vertical density or salinity gradient due to its lack of depth. Instead of a vertical gradient, the bay shows a horizontal density gradient, with fresh water entering from the drainage canals on the west side and seawater entering through gaps in the keys and through the safety valve section of shoals. Bay salinity reaches a peak in June. Changes in the salinity pattern of the bay have had negative effects on formerly abundant species such as red drum. Biscayne Bay and Florida Bay are major nurseries for red grouper and gray snapper. The bottom of the lagoon hosts sponges and soft corals in places where grasses cannot not grow. Three primary species of seagrass are found in the park: turtlegrass, shoal grass and manatee grass. The endangered Johnson's seagrass is also found in small quantities in the bay, which is at the southern end of the grass's range. Roughly 75 percent of the central bay floor is covered by grasses. Scarring of seagrass beds by vessel groundings or propellers is a significant problem. About 200 such incidents are documented each year, with full re-growth requiring up to 15 years. The bay is also affected by commercial shrimp trawling, which is permitted in park waters.  The passage of roller-frame trawl nets does not harm grasses, but damages soft corals and sponges.

Ex Output:
What is the name of the entity that provides habitat for juvenile sea animals that have left the shelter of the mangrove belts?


Ex Input:
Passage: One of the most persistent and popular stories regarding the Mormon pioneers was about three of the rescuers who helped the pioneers cross Sweetwater River.  The most popular telling, by Solomon Kimball, states:
Three eighteen-year-old boys belonging to the relief party came to the rescue; and to the astonishment of all who saw, carried nearly every member of that ill-fated handcart company across the snow-bound stream. The strain was so terrible, and the exposure so great, that in later years all the boys died from the effects of it. When President Brigham Young heard of this heroic act, he wept like a child, and later declared publicly, "That act alone will ensure C. Allen Huntington, George W. Grant, and David P. Kimball an everlasting salvation in the Celestial Kingdom of God, worlds without end.
This version was quoted by Gordon B. Hinckley, James E. Faust and was previously taught in Sunday School in the LDS Church for both adults and children.Chad Orton notes it would be physically impossible for three boys to carry five hundred people across the river in two hours.  In actuality, the rescue party had several rescuers instead of three, eighteen of which have been positively identified as being at the Sweetwater crossing.  The rescuers brought ten rescue wagons in addition to the wagons the Martin Company had with them. Many survivors wrote about riding the wagons across.  However, because of time constraints, not everyone could ride the wagons. Some were carried, but other survivors wrote that they crossed the river themselves or with the help of people other than the three boys.  The boys mentioned in the story did help some people across, but not "nearly every member" as reported in the mythologized version of the story. While the three boys were among those that helped several across, the ages were wrong. C. Allen Huntington was 24, David P. Kimball was 17, and George W. Grant was 16.  There is no medical evidence that they died from effects of the crossing, and most lived active and relatively long lives.  Outside of Kimball's account, there is no other account of Brigham Young promising everlasting salvation to the rescuers based on a single act. Orton notes that such a promise is inconsistent with church doctrine.  John Thomas notes that Solomon Kimball did not witness the crossing, but relied heavily on other sources, particularly Orson F. Whitney's 1888 account, who also claimed that all of the boys died from the event, even though Huntington was still alive in 1888.

Ex Output:
What are the names of the three eighteen-year-olds who helped the pioneers cross Sweetwater River?


Ex Input:
Passage: In March 1957, John Lennon, then aged sixteen, formed a skiffle group with several friends from Quarry Bank High School in Liverpool. They briefly called themselves the Blackjacks, before changing their name to the Quarrymen after discovering that a respected local group was already using the other name. Fifteen-year-old Paul McCartney joined them as a rhythm guitarist shortly after he and Lennon met that July. In February 1958, McCartney invited his friend George Harrison to watch the band. The fifteen-year-old auditioned for Lennon, impressing him with his playing, but Lennon initially thought Harrison was too young for the band. After a month of Harrison's persistence, during a second meeting (arranged by McCartney), he performed the lead guitar part of the instrumental song "Raunchy" on the upper deck of a Liverpool bus, and they enlisted him as their lead guitarist.By January 1959, Lennon's Quarry Bank friends had left the group, and he began his studies at the Liverpool College of Art. The three guitarists, billing themselves at least three times as Johnny and the Moondogs, were playing rock and roll whenever they could find a drummer. Lennon's art school friend Stuart Sutcliffe, who had just sold one of his paintings and was persuaded to purchase a bass guitar, joined in January 1960, and it was he who suggested changing the band's name to Beatals, as a tribute to Buddy Holly and the Crickets. They used this name until May, when they became the Silver Beetles, before undertaking a brief tour of Scotland as the backing group for pop singer and fellow Liverpudlian Johnny Gentle. By early July, they had refashioned themselves as the Silver Beatles, and by the middle of August shortened the name to The Beatles.Allan Williams, the Beatles' unofficial manager, arranged a residency for them in Hamburg, but lacking a full-time drummer they auditioned and hired Pete Best in mid-August 1960. The band, now a five-piece, left four days later, contracted to club owner Bruno Koschmider for what would be a 3​1⁄2-month residency. Beatles historian Mark Lewisohn writes: "They pulled into Hamburg at dusk on 17 August, the time when the red-light area comes to life ... flashing neon lights screamed out the various entertainment on offer, while scantily clad women sat unabashed in shop windows waiting for business opportunities.".

Ex Output:
What is the first name of the person who invited his friend George Harrison to watch the band?