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: Washington, D.C. is located in the mid-Atlantic region of the U.S. East Coast. Due to the District of Columbia retrocession, the city has a total area of 68.34 square miles (177.0 km2), of which 61.05 square miles (158.1 km2) is land and 7.29 square miles (18.9 km2) (10.67%) is water. The District is bordered by Montgomery County, Maryland to the northwest; Prince George's County, Maryland to the east; Arlington County, Virginia to the south; and Alexandria, Virginia to the west.
The south bank of the Potomac River forms the District's border with Virginia and has two major tributaries: the Anacostia River and Rock Creek. Tiber Creek, a natural watercourse that once passed through the National Mall, was fully enclosed underground during the 1870s. The creek also formed a portion of the now-filled Washington City Canal, which allowed passage through the city to the Anacostia River from 1815 until the 1850s. The Chesapeake and Ohio Canal starts in Georgetown and was used during the 19th century to bypass the Little Falls of the Potomac River, located at the northwest edge of Washington at the Atlantic Seaboard fall line.The highest natural elevation in the District is 409 feet (125 m) above sea level at Fort Reno Park in upper northwest Washington. The lowest point is sea level at the Potomac River. The geographic center of Washington is near the intersection of 4th and L Streets NW.The District has 7,464 acres (30.21 km2) of parkland, about 19% of the city's total area and the second-highest percentage among high-density U.S. cities. This factor contributed to Washington, D.C., being ranked as third in the nation for park access and quality in the 2018 ParkScore ranking of the park systems of the 100 most populous cities in the United States, according to the nonprofit Trust for Public Land.The National Park Service manages most of the 9,122 acres (36.92 km2) of city land owned by the U.S. government. Rock Creek Park is a 1,754-acre (7.10 km2) urban forest in Northwest Washington, which extends 9.3 miles (15.0 km) through a stream valley that bisects the city. Established in 1890, it is the country's fourth-oldest national park and is home to a variety of plant and animal species, including raccoon, deer, owls, and coyotes. Other National Park Service properties include the C&O Canal National Historical Park, the National Mall and Memorial Parks, Theodore Roosevelt Island, Columbia Island, Fort Dupont Park, Meridian Hill Park, Kenilworth Park and Aquatic Gardens, and Anacostia Park. The D.C. Department of Parks and Recreation maintains the city's 900 acres (3.6 km2) of athletic fields and playgrounds, 40 swimming pools, and 68 recreation centers. The U.S. Department of Agriculture operates the 446-acre (1.80 km2) U.S. National Arboretum in Northeast Washington.

Output: What is the country's fourth-oldest national park?

Input: Consider Input: Passage: Ned Rochlin is a biodynamic farmer living with his girlfriend, Janet. While selling produce at a local market, Ned sells marijuana to a uniformed police officer due to the officer's claim that he had a stressful week, which made Ned feel sympathetic after initially being skeptical. Ned is then arrested on a charge of selling drugs.
Ned has three sisters: Miranda the middle sister, is a journalist for Vanity Fair trying to get her first major article published. Though she has trouble finding a man to keep her interest, she and a neighbor, Jeremy have hidden feelings for each other. Natalie, the youngest, is an independent, bisexual hipster living with her girlfriend, Cindy, and five other roommates. Liz, the oldest, is married to Dylan, a documentary filmmaker. Their marriage is failing as Dylan shows no sexual or emotional interest in Liz. They also have strict control over their son River, which leaves him unhappy and unable to express himself.
When Ned is released from prison, he returns home to his girl and his dog. He finds that she is living with Billy, and no longer wishes to continue their relationship or allow him to work at the farm. Billy gives Ned a ride into town and tells him that if he can scrape together $500 for the first 2 months rent, Janet might let him stay in the goat barn behind the farm. Ned initially stays at his mother's house but a few days later shows up at Liz's place, asking if he can stay with her. He is put in River's room and told that he must help around the house and work with Dylan on his newest documentary about a Russian ballerina named Tatiana.

Output: Who has trouble finding a man to keep their interest?

Input: Consider Input: Passage: Serving four years of his ten-year sentence for armed robbery, Carter "Doc" McCoy is denied parole from a Texas prison. When his wife Carol visits him, he tells her to do whatever is necessary to make a deal with Jack Beynon, a corrupt businessman in San Antonio, to free him. Beynon uses his influence and obtains Doc's parole on the condition that he take part in a bank robbery with two of his henchmen, Rudy and Frank. Frank kills a guard, then Rudy attempts a double-cross, killing Frank and drawing on Doc, who quickly reacts and shoots Rudy several times. Doc takes the $500,000 ($3.0 million today) and leaves. Rudy, having secretly worn a bulletproof vest, is only wounded.
Doc meets with Beynon, who attempts a double-cross before Carol shoots and kills him. Doc realizes that Carol had sex with Beynon to secure his parole. Doc angrily gathers up the money and, after a bitter quarrel, the couple flees for the border at El Paso.
A bloodied Rudy forces rural veterinarian Harold and his wife Fran to treat his injuries, then kidnaps them to pursue Doc and Carol. Beynon's brother Cully and his thugs also pursue the McCoys. At a train station, a con man swaps locker keys with Carol and steals their bag of money. Doc follows him onto a train and forcefully takes it back. The injured con man and a train passenger a boy whom Doc had rebuked for squirting him with a water gun are taken to the police station, where they identify Doc's mug shot.
Output: Who is the henchman pursuing the bank robber and his wife?