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.

[Q]: Passage: The St. Johns River (Spanish: Río 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.
[A]: What state remained an undeveloped frontier into the 20th century?


[Q]: Passage: Speedy and his friend Miguel visit a ghost town in the desert, followed by Daffy. There, Speedy unveils what appears to be gold and a map to the location of the mine where more can be found. Daffy notices, and attempts to take the map; he is foiled by getting caught in the piano tape.
Daffy's next attempt involves setting up a phone with explosives. Speedy answers it when it rings, but quickly hands it to Daffy, saying he has a call; his plan backfires as he is blown up. Speedy teases him, "What's the matter, epa loco? You got the wrong number?" He takes off, Daffy in hot pursuit. Daffy finds him in a barrel, and throws a grenade in; however, he accidentally throws the pin, and not the actual grenade.
He then sticks his head through a hole in the fence, catching Speedy by the tail, but Miguel drops a horseshoe on him. Further antics ensue, including Daffy having a taxidermy bull head fall on him like a mask and Speedy (taking advantage of Daffy's appearance) acting as a matador, and Speedy hiding behind different-shaped bottles, only to get catsup in his eye on the last. Speedy and Miguel head to the mine, where Daffy repeatedly tries to throw dynamite in, to blow them up; it eventually blows up right next to him.
Daffy then demands that Speedy give up the cart, which he does. However, it is not gold, but cheese! Daffy then really does go crazy, bouncing away and laughing hysterically. When Miguel asks "Gee whiz, Speedy, what's the matter with the loco duck?", Speedy shrugs, "I dunno. I guess maybe he don't like cheese.".
[A]: Where does Speedy unveil a map?


[Q]: Passage: By mid-1858 the problems with the Thames had been building for several years. In his  novel Little Dorrit—published as a serial between 1855 and 1857—Charles Dickens wrote that the Thames was "a deadly sewer ... in the place of a fine, fresh river". In a letter to a friend, Dickens  said: "I can certify that the offensive smells, even in that short whiff, have been of a most head-and-stomach-distending nature", while the social scientist and journalist George Godwin wrote that "in parts the deposit is more than six feet deep" on the Thames foreshore, and that "the whole of this is thickly impregnated with impure matter". In June 1858 the temperatures in the shade in London averaged 34–36 °C (93–97 °F)—rising to 48 °C (118 °F) in the sun. Combined with an extended spell of dry weather, the level of the Thames dropped and raw effluent from the sewers remained on the banks of the river. Queen Victoria and Prince Albert attempted to take a pleasure cruise on the Thames, but returned to shore within a few minutes because the smell was so terrible. The press soon began calling the event "The Great Stink"; the leading article in the City Press observed that "Gentility of speech is at an end—it stinks, and whoso once inhales the stink can never forget it and can count himself lucky if he lives to remember it". A writer for The Standard concurred with the opinion. One of its reporters described the river as a "pestiferous and typhus breeding abomination", while a second wrote that "the amount of poisonous gases which is thrown off is proportionate to the increase of the sewage which is passed into the stream". The leading article in The Illustrated London News commented that:
We can colonise the remotest ends of the earth; we can conquer India; we can pay the interest of the most enormous debt ever contracted; we can spread our name, and our fame, and our fructifying wealth to every part of the world; but we cannot clean the River Thames.
[A]:
What is the first name of the person who told his friend that he could certify that the offensive smell have been of the most head-and-stomach distending nature?