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: Two days after the events of the first film, a traumatized and blood-covered Sarah escapes the cave with no memory of the events. She is taken to a hospital, where it is found that some of the blood on her belongs to Juno Kaplan. Sheriff Vaines takes his deputy Elen Rios, Sarah, and three spelunking specialists – Dan, Greg, and Cath – to the cave to find the missing women. The team members are sent down via an old mine shaft operated by the old, mysterious Ed Oswald.
The group discovers Rebecca's mutilated body, causing Sarah to have flashbacks of the crawlers and causing Vaines to believe Sarah may be responsible for the girls' disappearance.  While crawling through a tunnel, she attacks Vaines and the others, causing the others to split up. Vaines runs to search for Sarah, and in the process is surprised by a crawler, and fires his gun in a panic, causing a minor collapse in the cavern which traps Cath, separating her from Rios, Dan, and Greg.  The three decide to find an alternate way around in order to try to free Cath and arrive in a room full of bones, where they find Holly's video camera. They watch it and realize the women were attacked by the crawlers. The three are then themselves attacked by crawlers and separated.
Rios starts calling for help, alerting the crawlers to her location, but is rescued by Sarah.  The two then watch as a crawler kills Dan and drags his body away, prompting Sarah to inform Rios that the crawlers are blind and hunt via sound. After escaping from and killing a crawler, Cath finds Greg before the two escape from another crawler and find Sam's body. They decide to try to use her to swing across a chasm, but are attacked again. Greg sacrifices himself to buy time for Cath, but she ultimately does not survive.
[A]: Who attacks someone, causing the group to split up?


[Q]: Passage: The boards of the covers, previously assumed to be limewood, are now thought to be birch, an unusual wood in later bindings, but one easily available in northern England.  Both have four holes where the binding threads were laced through; the two threads were run round the inner edges of the cover and knotted back at the holes.  The front cover has an additional 12 holes where the ends of the cords for the raised framing lines went through, at the four corners of the two main frames, and the ends of the horizontal bars between the interlace panels and the central vine motif.The stitching of the binding uses "Coptic sewing", that is "flexible unsupported sewing (produced by two needles and thread looping round one another in a figure-of-eight sewing pattern)"  Coptic sewing uses small threads both to attach the leaves together and, knotted together, to attach the pages to the cover boards. Normal Western binding uses thread for the former and thicker cord running across the spine of the book for the latter, with the thread knotted onto the cords.  Coptic sewing is also found in the earliest surviving leather bookbindings, which are from Coptic libraries in Egypt from the 7th and 8th centuries; in particular the design of the cover of one in the Morgan Library (MS M.569) has been compared to the St Cuthbert Gospel.  In the techniques used in the binding, apart from the raised decoration, the closest resemblance is to an even smaller Irish pocket gospel book from some 50 years later, the Cadmug Gospels at Fulda, which is believed to have belonged to Saint Boniface.  This is also in red goatskin, with coloured incised lines, and uses a similar unsupported or cordless stitching technique.  The first appearance of the cords or supports that these "unsupported" bindings lack is found in two other books at Fulda, and they soon became universal in, and characteristic of, Western bookbinding until the arrival of modern machine techniques.  The cords run horizontally across the spine, and are thicker than the threads that hold the pages together.  They are attached, typically by lacing through holes or glue, to the two boards of the cover, and the threads holding the gatherings are knotted to them, resulting in a stronger binding.
[A]: Which types of boards have four holes where the binding threads were laced through?


[Q]: Passage: The newspaper Aftonbladet had supplied the pigeons, bred in northern Norway with the optimistic hope that they would manage to return there, and their message cylinders contained pre-printed instructions in Norwegian asking the finder to pass the messages on to the newspaper's address in Stockholm. Andrée released at least four pigeons, but only one was ever retrieved, by a Norwegian steamer where the pigeon had alighted and been promptly shot. Its message is dated 13 July and gives the travel direction at that point as East by 10° South. The message reads: "The Andree Polar Expedition to the "Aftonbladet", Stockholm. 13 July, 12.30 p.m., 82 deg. north latitude, 15 deg. 5 min. east longitude. Good journey eastwards, 10 deg. south. All goes well on board. This is the third message sent by pigeon. Andree."
Lundström and others note that all three messages fail to mention the accident at takeoff, or the increasingly desperate situation, which Andrée described fully in his main diary. The balloon was out of equilibrium, sailing much too high and thereby losing hydrogen faster than even Nils Ekholm had feared, then repeatedly threatening to crash on the ice. It was weighed down by being rain-soaked ("dripping wet", writes Andrée in the diary), and the men were throwing all the sand and some of the payload overboard to keep it airborne.
Free flight lasted for 10 hours and 29 minutes and was followed by another 41 hours of bumpy riding with frequent ground contact before the inevitable final crash. The Eagle traveled for two days and three-and-a-half hours altogether, during which time, according to Andrée, none of the three men got any sleep. The definitive landing appears to have been gentle. Neither the men nor the homing pigeons in their wicker cages were hurt, and none of the equipment was damaged, not even the delicate optical instruments and Strindberg's two cameras.
[A]:
What was the name of the item that was in an accident at takeoff?