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 Willamette River ( (listen) wil-AM-it) is a major tributary of the Columbia River, accounting for 12 to 15 percent of the Columbia's flow. The Willamette's main stem is 187 miles (301 km) long, lying entirely in northwestern Oregon in the United States. Flowing northward between the Oregon Coast Range and the Cascade Range, the river and its tributaries form the Willamette Valley, a basin that contains two-thirds of Oregon's population, including the state capital, Salem, and the state's largest city, Portland, which surrounds the Willamette's mouth at the Columbia.
Originally created by plate tectonics about 35 million years ago and subsequently altered by volcanism and erosion, the river's drainage basin was significantly modified by the Missoula Floods at the end of the most recent ice age. Humans began living in the watershed over 10,000 years ago. There were once many tribal villages along the lower river and in the area around its mouth on the Columbia. Indigenous peoples lived throughout the upper reaches of the basin as well.
Rich with sediments deposited by flooding and fed by prolific rainfall on the western side of the Cascades, the Willamette Valley is one of the most fertile agricultural regions in North America, and was thus the destination of many 19th-century pioneers traveling west along the Oregon Trail. The river was an important transportation route in the 19th century, although Willamette Falls, just upstream from Portland, was a major barrier to boat traffic. In the 21st century, major highways follow the river, and roads cross it on more than 50 bridges.
Since 1900, more than 15 large dams and many smaller ones have been built in the Willamette's drainage basin, 13 of which are operated by the U.S. Army Corps of Engineers (USACE). The dams are used primarily to produce hydroelectricity, to maintain reservoirs for recreation, and to prevent flooding. The river and its tributaries support 60 fish species, including many species of salmon and trout; this is despite the dams, other alterations, and pollution (especially on the river's lower reaches). Part of the Willamette Floodplain was established as a National Natural Landmark in 1987 and the river was named as one of 14 American Heritage Rivers in 1998.

Ex Output:
What organization operates 13 of the dams built in the river that is a major tributary of the Columbia river?


Ex Input:
Passage: Three neighborhood teens and childhood friends, Alex, Tuck, and Munch, are upset by the fact that their neighborhood, Mulberry Woods, Nevada, is going to be demolished, allegedly for a new highway construction project, and they all have to move away because of it.
While at Tuck's house, their phones start to glitch out, displaying seemingly random graphical patterns. They soon find out, through Munch, that the patterns are actually a map to a spot in the desert 17.6 miles away. They decide to go to the desert on their bikes and disguise it as a sleepover, recording the experience on various cameras because it's their last night together.
Tuck, Alex, and Munch eventually make it to the desert, and they follow the map to a dusty, rusted object under an electrical tower. Tuck, confused, decides to abruptly call it off when the object starts to copy Alex's ringtone, and they follow another map to a barn. There the object telekinetically starts to repair itself, and the boys find it contains an alien that can answer questions with "Yes" or "No" answers, from which they learn it is from outer space, has crash landed after being shot down by an unknown force, and is seriously injured.
They follow another map to a pawn shop, where the object further repairs itself, allowing the alien to reveal itself, using Alex's phone camera to "see" and befriend the three. While in an alley, they decide to name the alien "Echo." Looking for more parts to repair Echo, they again follow another map to a house where Emma, a girl who goes to their high school, lives and finds out about Echo. Emma soon joins the team, as they go to a bar, then an arcade, and she finds out the object Echo is in is a key to a spaceship hidden in Mulberry Woods.

Ex Output:
Who names the alien?


Ex Input:
Passage: An agricultural farm is giving prizes for the person who makes the largest homegrown project. Porky and a rival neighbor both plan to win the agricultural farm prize, Porky with his garden and the neighbor with his chickens. Porky carefully plans a box of seeds, one by one while the man is busy mixing a bunch of bottles of items together. Porky goes to retrieve something as the man feeds the brand new mixture into the feeding bin for his chickens. But when they try it out, they spit the food out in disgust and seek food elsewhere. Porky grabs his bottle of quick grow, a hair tonic he hopes would work on his garden. To his amazement, it does. But he says nothing of it and heads inside his house.
The neighbor checks out his handy work and comments on it, allowing his chickens to come over and eat all of his fruits and vegetables. A little chick and a bigger chicken fight over a watermelon until it flings the chick away. The chick sadly retreats until it sees a bunch of spinach and decides to munch on it instead. The chick then comes back and punches the mean chicken before finishing the watermelon. (The chick eating spinach and then changing is a thinly-veiled Popeye reference).
When his garden has almost entirely been eaten, Porky finally notices the chickens and tries to get rid of them. But alas no luck, so he yells at the neighbor to get them back into his yard but the neighbor claims he doesn't know how they got on Porky's property, then attempts to "try" and make them return. He then leaves while a sad Porky heads to his door, only to find a long vine and follow it to a giant pumpkin.

Ex Output:

Which characters spit out the food the man mixed together?