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 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.

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


Input: Consider Input: Passage: Tom Hepple, a geologist, and Gerri Hepple, a counsellor, are an older married couple who have a comfortable, loving relationship. The film observes them over the course of the four seasons of a year, surrounded by family and friends who mostly suffer some degree of unhappiness. Gerri's friend and colleague, Mary, works as a receptionist at the health centre. She is a middle-aged divorcee seeking a new relationship, and despite telling everyone she is happy, appears desperate and depressed. She often seems to drink too much. The Hepples' only child, Joe, is 30 and unmarried and works as a solicitor giving advice on housing.
In the summer, the Hepples are visited by Ken, Tom's old friend from his student days. Ken is overweight, eats, smokes and drinks compulsively and seems very unhappy. Tom and Gerri host a barbecue in Ken's honour. Mary drives her newly bought car to the party, but gets lost and arrives late. Having had some wine, she flirts with Joe, whom she has known since he was a child. He remains friendly but does not reciprocate the flirtation. After the party, Mary reluctantly gives Ken a lift to the train station. He makes a clumsy romantic advance and Mary irritably rejects him.
Months later, in the autumn, Mary is once again at Tom and Gerri's home. Joe arrives with a new girlfriend, Katie. Mary appears rude and hostile towards Katie, which is not appreciated by Tom and Gerri. This creates a rift between Gerri and Mary.
In the winter, Tom, Gerri, and Joe attend the funeral for the wife of Tom's brother, Ronnie. Towards the end of the service, Ronnie's estranged son, Carl, arrives, and angrily asks why the ceremony was not delayed for him. At the reception at Ronnie's house, Carl becomes aggressive and walks out. Tom and Gerri invite Ronnie back to London to stay with them for a while and Ronnie agrees.

Output: Who flirts with Tom's child?


Input: Consider Input: Passage: Former resident Sonia Freeman (Lynn Rainbow, who filmed all of her scenes in just one day) returns to Number 96 after her release from a mental asylum. Sonia is now married to newspaper journalist Duncan Hunter. Her forgetful episodes and hallucinations become increasingly erratic and deranged. This worries Duncan, Sonia's good friend Jack Sellars and Jack's new girlfriend, flight attendant Diana Moore, who has moved into flat 6. It is revealed that Diana and Duncan are secretly scheming to drive Sonia insane. Jack and the police arrive just in time before Diana and Duncan can persuade Sonia to kill herself.
Aldo has been withholding cash takings from the deli to avoid paying income tax on it, but loses the money in a fire. He takes a night job at the Connaught Rooms function hall to recoup the losses.
Many of the residents become embroiled in the major plans for Dorrie and husband Herb's (Ron Shand) Ruby Wedding celebrations. After looking at her marriage certificate, Dorrie discovers that the best man Horace Deerman signed where the groom should have. Believing this means Dorrie is married to Horace, Dorrie, Herb and Flo track him down. Horace is revealed as a derelict alcoholic. Much to her dismay, Horace takes a fancy to Dorrie.
Les enlists Herb and Alf to assist in his new business venture: a sauna in the building's basement, unbeknownst to wife Norma.


Output: What is the last name of the person who is working with Duncan to drive someone crazy?