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.

Input: Consider Input: Passage: The Hudson Valley Rail Trail is a paved 4-mile (6.4 km) east–west rail trail in the town of Lloyd in Ulster County, New York, stretching from the Hudson River through the hamlet of Highland. The trail was originally part of the Poughkeepsie Bridge Route, a rail corridor that crossed the Hudson via the Poughkeepsie Bridge. Controlled by a variety of railroads throughout the 19th and 20th centuries, the bridge was damaged and became unusable after a 1974 fire. By the 1980s the corridor's then-owner, Conrail, had routed all rail traffic in the region north through Selkirk, and was eager to relieve itself of the bridge and adjoining rights-of-way. In 1984, it sold the entire property for one dollar to a felon who did not maintain it or pay taxes on it. The section of the corridor west of the Hudson was seized by Ulster County in 1991 and transferred to the town of Lloyd.
During the 1990s, a broadband utility seeking to lay fiber optic cable paid the town to pass through the former corridor. The town used part of its payment to pave the route and open it as a public rail trail in 1997. The creation of the trail was supported by a local Rotary club, which built a pavilion along the trail. The pavilion includes a donated antique caboose. While the trail originally ended at Route 44–55, it was extended eastward between 2009 and 2010, intersecting Route 9W and continuing to the Poughkeepsie Bridge. The extension was paid for by stimulus funding.
The bridge, now a pedestrian walkway called Walkway Over the Hudson, connects the trail with the Dutchess Rail Trail to the east, creating a 30-mile (48 km) rail trail system that spans the Hudson. The trail is expected to be extended west, where it will border Route 299. As it passes through Highland, the trail is carried by several bridges, connects to four parking areas, and traverses a wetlands complex. The trail forms part of the proposed Empire State Trail.

Output: What is the full name of the structure that was damaged and became unusable after a fire in 1974?


Input: Consider Input: Passage: Amy Winslow is an art student majoring in painting, who is all by her own. Her mother died when she was a child and her father is not around. As a student she has financial problems, so she is surprised when the couple Joan and Stuart Quinn (Connie Sellecca and David Dukes) decide to take her in their house for a small amount of rent. Little does Amy know that Joan is following her every step through secret cameras, and that she has a hidden agenda for her. Initially, Amy is very content living with the Quinns, believing that she has found the family she has never had. When she loses the university's financial aide through an administration error, Joan immediately steps in to take care of her. They both drink a large amount of wine, and then Joan announces that because she is infertile, they are looking for a surrogate mother. She then tells Amy that they feel that she is the perfect candidate. Amy is flattered, and next day discusses the situation with her friendly teacher Eric Shaw. She then agrees when the Quinns propose to pay for her college fees if she helps them out.
When Amy is a few months pregnant, Joan starts to show strange behavior. Amy feels smothered by Joan's overbearing attitude, feeling that she is being treated like a ten-year-old child. Her oil painting being taken away, Amy looks for it in the basement, only to find old baby clothes. Joan catches her, and becomes furious, scaring Amy away. She later tries to explain the situation by saying that she was pregnant four years ago, though had a miscarriage. Amy does not believe her story, though Eric - who was already 'warned' by Joan that Amy might act paranoid - tells her to focus on her painting, not on the Quinns.

Output: Why does Amy agree to be a surrogate mother?


Input: Consider Input: Passage: Mother rodents provide both direct parental care, such as nursing, grooming, retrieving and huddling, and indirect parenting, such as food caching, nest building and protection to their offspring. In many social species, young may be cared for by individuals other than their parents, a practice known as alloparenting or cooperative breeding. This is known to occur in black-tailed prairie dogs and Belding's ground squirrels, where mothers have communal nests and nurse unrelated young along with their own. There is some question as to whether these mothers can distinguish which young are theirs. In the Patagonian mara, young are also placed in communal warrens, but mothers do not permit youngsters other than their own to nurse.Infanticide exists in numerous rodent species and may be practiced by adult conspecifics of either sex. Several reasons have been proposed for this behavior, including nutritional stress, resource competition, avoiding misdirecting parental care and, in the case of males, attempting to make the mother sexually receptive. The latter reason is well supported in primates and lions but less so in rodents. Infanticide appears to be widespread in black-tailed prairie dogs, including infanticide from invading males and immigrant females, as well as occasional cannibalism of an individual's own offspring. To protect against infanticide from other adults, female rodents may employ avoidance or direct aggression against potential perpetrators, multiple mating, territoriality or early termination of pregnancy. Feticide can also occur among rodents; in Alpine marmots, dominant females tend to suppress the reproduction of subordinates by being antagonistic towards them while they are pregnant. The resulting stress causes the fetuses to abort.
Output: The mothers of what species might not be able to tell which of the babies they care for are their own?