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 St. Johns River (Spanish: Rio San Juan) is the longest river in the U.S. state of Florida and its most significant one for commercial and recreational use. At 310 miles (500 km) long, it flows north and winds through or borders twelve counties. The drop in elevation from headwaters to mouth is less than 30 feet (9 m); like most Florida waterways, the St. Johns has a very low flow rate 0.3 mph (0.13 m/s) and is often described as "lazy". Numerous lakes are formed by the river or flow into it, but as a river its widest point is nearly 3 miles (5 km) across. The narrowest point is in the headwaters, an unnavigable marsh in Indian River County. The St. Johns drainage basin of 8,840 square miles (22,900 km2) includes some of Florida's major wetlands. It is separated into three major basins and two associated watersheds for Lake George and the Ocklawaha River, all managed by the St. Johns River Water Management District.
A variety of people have lived on or near the St. Johns, including Paleo-indians, Archaic people, Timucua, Mocama, French and Spanish settlers, Seminoles, slaves and freemen, Florida crackers, land developers, tourists and retirees. It has been the subject of William Bartram's journals, Marjorie Kinnan Rawlings' books, and Harriet Beecher Stowe's letters home. Although Florida was the location of the first permanent European settlement in what would become the United States, it was the last U.S. territory on the east coast to be developed; it remained an undeveloped frontier into the 20th century. When attention was turned to the state, however, much of the land was rapidly overdeveloped in a national zeal for progress. The St. Johns, like many Florida rivers, was altered to make way for agricultural and residential centers. It suffered severe pollution and human interference that has diminished the natural order of life in and around the river. In all, 3.5 million people live within the various watersheds that feed into the St. Johns River. The St. Johns, named one of 14 American Heritage Rivers in 1998, was number 6 on a list of America's Ten Most Endangered Rivers in 2008. Restoration efforts are under way for the basins around the St. Johns as Florida continues to deal with population increases in the river's vicinity.

Ex Output:
What state remained an undeveloped frontier into the 20th century?

Ex Input:
Passage: Bloc Party confirmed a preliminary track list of 13 songs in August 2006; this included future bonus tracks "England" and "We Were Lovers". A low-quality rip of A Weekend in the City was leaked in November and showed a track list of 11 songs. Wichita Recordings did not comment, but the band members were quoted as being worried about a reduction in the potential impact of the album's content and sales. Bloc Party started a promotional tour of North America the same month with Panic! at the Disco, but cut it short after three concerts when Tong suffered a collapsed lung. The focus was changed to interviews throughout the world to explain the album's stylised lyrics and composition in the run-up to its release.Final tweaks on the album were completed in December 2006 in London. A high-quality version was leaked in January 2007 and its contents were confirmed by Okereke. Journalists who obtained an official copy of the album's final mix suggested that it featured electronically tampered rock soundscapes in the vein of Radiohead, New Order, and Bjork. Bloc Party previewed A Weekend in the City in its entirety on 24 January 2007 at the Bournemouth Old Firestation, a performance which coincided with the Japanese release of the album. The first single, "The Prayer", was released on 29 January. The band performed at a special BBC Radio 1 showcase at Maida Vale Studios on 30 January as a precursor to a February promotional tour of the UK.The album was released in the rest of the world in the first week of February. The title comes as a tangent to the central theme of the album, "the living noise of a metropolis". The cover art is part of A Modern Project by German photographer Rut Blees Luxemburg, famous for her night cityscapes of London and for the cover art of The Streets' Original Pirate Material. The photograph is an aerial image of London's Westway, which shows the road and the adjacent sports pitches lit by the sodium glow of street lamps, and was chosen because the band believed "it was important we captured London breathing". Luxemburg has explained that "in this picture you can see how intricately and optimistically public space in the city is shared".

Ex Output:
Whose members were quoted as being worried about a reduction in the potential impact of the album's content and sales?

Ex Input:
Passage: The whale ear has specific adaptations to the marine environment. In humans, the middle ear works as an impedance equalizer between the outside air's low impedance and the cochlear fluid's high impedance. In whales, and other marine mammals, there is no great difference between the outer and inner environments. Instead of sound passing through the outer ear to the middle ear, whales receive sound through the throat, from which it passes through a low-impedance fat-filled cavity to the inner ear. The whale ear is acoustically isolated from the skull by air-filled sinus pockets, which allow for greater directional hearing underwater. Odontocetes send out high frequency clicks from an organ known as a melon. This melon consists of fat, and the skull of any such creature containing a melon will have a large depression. The melon size varies between species, the bigger the more dependent they are of it. A beaked whale for example has a small bulge sitting on top of its skull, whereas a sperm whale's head is filled up mainly with the melon.The whale eye is relatively small for its size, yet they do retain a good degree of eyesight. As well as this, the eyes of a whale are placed on the sides of its head, so their vision consists of two fields, rather than a binocular view like humans have. When belugas surface, their lens and cornea correct the nearsightedness that results from the refraction of light; they contain both rod and cone cells, meaning they can see in both dim and bright light, but they have far more rod cells than they do cone cells. Whales do, however, lack short wavelength sensitive visual pigments in their cone cells indicating a more limited capacity for colour vision than most mammals. Most whales have slightly flattened eyeballs, enlarged pupils (which shrink as they surface to prevent damage), slightly flattened corneas and a tapetum lucidum; these adaptations allow for large amounts of light to pass through the eye and, therefore, a very clear image of the surrounding area. They also have glands on the eyelids and outer corneal layer that act as protection for the cornea.The olfactory lobes are absent in toothed whales, suggesting that they have no sense of smell. Some whales, such as the bowhead whale, possess a vomeronasal organ, which does mean that they can "sniff out" krill.Whales are not thought to have a good sense of taste, as their taste buds are atrophied or missing altogether. However, some toothed whales have preferences between different kinds of fish, indicating some sort of attachment to taste. The presence of the Jacobson's organ indicates that whales can smell food once inside their mouth, which might be similar to the sensation of taste.

Ex Output:
What is the name of the organ in the mouth of the animals that have slightly flattened eyeballs that allows them to smell in their mouths?