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 Q]: Passage: The term "Gadget" was a laboratory euphemism for a bomb, from which the laboratory's weapon physics division, "G Division", took its name in August 1944. At that time it did not refer specifically to the Trinity Test device as it had yet to be developed, but once it was, it became the laboratory code name. The Trinity Gadget was officially a Y-1561 device, as was the Fat Man used a few weeks later in the bombing of Nagasaki. The two were very similar, with only minor differences, the most obvious being the absence of fuzing and the external ballistic casing. The bombs were still under development, and small changes continued to be made to the Fat Man design.To keep the design as simple as possible, a near solid spherical core was chosen rather than a hollow one, although calculations showed that a hollow core would be more efficient in its use of plutonium. The core was compressed to prompt super-criticality by the implosion generated by the high explosive lens. This design became known as a "Christy Core" or "Christy pit" after physicist Robert F. Christy, who made the solid pit design a reality after it was initially proposed by Edward Teller. Along with the pit, the whole physics package was also informally nicknamed "Christy['s] Gadget".Of the several allotropes of plutonium, the metallurgists preferred the malleable δ phase. This was stabilized at room temperature by alloying it with gallium. Two equal hemispheres of plutonium-gallium alloy were plated with silver, and designated by serial numbers HS-1 and HS-2. The 6.19-kilogram (13.6 lb) radioactive core generated 15 W of heat, which warmed it up to about 100 to 110 °F (38 to 43 °C), and the silver plating developed blisters that had to be filed down and covered with gold foil; later cores were plated with nickel instead. The Trinity core consisted of just these two hemispheres. Later cores also included a ring with a triangular cross-section to prevent jets forming in the gap between them.
[EX A]: What is the code name of the device that was developed after it had a code name?

[EX Q]: Passage: Matthew is an American exchange student who has come to Paris to study French. While at the Cinémathèque Française protesting the firing of Henri Langlois, he meets the free-spirited twins Théo and Isabelle. The three bond over a shared love of film.
After dinner with their parents, Théo and Isabelle offer Matthew the chance to stay with them while their parents are on a trip. Matthew accepts, considering them his first French friends.
Matthew becomes suspicious of their relationship after seeing them sleeping nude together; he soon discovers that they accept nudity and sexuality liberally. After Théo loses at a trivia game, Isabelle sentences him to masturbate to a Marlene Dietrich poster in front of them. After Matthew loses at another game, he is seduced to take Isabelle's virginity. The two then become lovers.
Matthew begins to accept Théo and Isabelle's sexuality and his time living with them soon becomes idyllic. The three re-enact a famous scene from Bande à part by "breaking the world record for running through the Louvre", and Matthew and Théo engage in playful arguments about Charlie Chaplin and Buster Keaton, Eric Clapton and Jimi Hendrix, as well as the subject of Maoism, which Théo fervently believes in. 
During this time Matthew begins to pursue a relationship with Isabelle, separate from Théo. Matthew and Isabelle leave the house and go on a regular date, which she has not experienced before. Théo retaliates by inviting a companion up to his room, upsetting Isabelle. She distances herself from both Théo and Matthew, only to find them next to each other on Théo's bed when an argument between the two turns erotic.
[EX A]: Who bonds over a shared love of film?

[EX Q]: Passage: The Red River Trails are less well known today than many other pioneer trails and trade routes in North America, and do not occupy as large a place in folklore as the great western trails in the United States and the fur-trading canoe routes of Canada. They were neither fought over nor the locus of battles (with the exception of the Dakota War of 1862), and although hazardous at times, other trails presented greater dangers. It may be that this relative lack of attention is due to the fact they did not lead to annexation of any territory to either of the nations in which the trails were located.The trails nevertheless were instrumental in the development of central North America. Traffic over the West Plains Trail sustained the Selkirk Settlement in its early years. The trails also gave settlers of that colony and their Métis neighbours a route for migration as well as a highway for trade that was not dependent on the Hudson's Bay Company. As usage grew, old fur trading posts became settlements and new communities were established along the cart routes.  The trails pioneered by the fur brigades accelerated development of Minnesota and North Dakota, and facilitated settlement of the Canadian northwest.
The trails had profound political effects during a time of Anglo-American tension. Both Britain and the U.S. were concerned about each other's cross-border influences. Born out of commercial needs and located by the dictates of geography, the trails helped create and contribute to these international influences and the tensions which resulted. The United States sent military expeditions along the route of the trails to assert national interests in the face of the continued British presence in the northwestern fur posts on soil which the U.S. claimed. The Americans were also concerned about the establishment of Lord Selkirk's colony as well as British claims to the Red River Valley. Finally the U.S. wanted to curtail Britain's attempts to get access to the Mississippi, access implicit in the Treaty of Paris ending the American War of Independence, and which Britain sought into the nineteenth century.  The United States' assertion of dominion over its new territories parried and reversed the British domination of the fur trade in the upper Mississippi valley, which had continued for decades after the Revolutionary War settlement which had assigned those territories to the new nation.
[EX A]:
What were neither fought over nor the locus of battles?