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.

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

Passage: Bud Doyle is a jockey who has discovered the secret to get his favorite mount, Six-Shooter, to boost his performance. If he simply chants the phrase, "Whoop-te-doo", the horse responds with a burst of speed. There is a special bond between the jockey and his mount, but there is increasing tension between Doyle and the horse's owner, Pop Blake (who also raised Doyle), over Doyle's relationship with local singer Babe Ellis. Blake sees Ellis as a distraction prior to the upcoming big race, the Camden Stakes.
The owner of the club where Babe sings, Wally Weber, has his eyes on his horse winning the Camden Stakes. When the issues between Pop and Doyle come to a head, Pop tells Doyle that he has to choose: either he stops seeing Babe, or he'll be replaced as Six-Shooter's jockey in the big race. Angry and frustrated, Doyle quits. Weber approaches him to become the jockey for Rose Dawn, Weber's horse, and Doyle agrees, with the precondition that he not ride Royal Dawn in the Camden Stakes, for he wants Six-Shooter to still win the race.  Weber accedes to that one precondition, however, on the day of the race, he makes it clear that Doyle is under contract, and that he will ride Rose Dawn in the race.
Upset, Doyle has no choice but to ride Rose Dawn.  However, during the race, he manages to chant his signature "Whoop-te-doo" to Six-Shooter, causing his old mount to win the race. Furious that his horse lost, Weber goes to the judges, who rule that Doyle threw the race, pulling back on Rose Dawn, to allow Six-Shooter to win, and suspend Doyle from horse-racing.
Which horse does Bud Doyle hope wins the Camden Stakes?

Passage: In the opinion of Robin Fedden, a diplomat, and later Deputy General Secretary of the National Trust and author of the Trust's first guidebook for Chartwell, the house became "the most important country house in Europe". A stream of friends, colleagues, disgruntled civil servants and concerned military officers came to the house to provide information to support Churchill's struggle against appeasement. At Chartwell, he developed what Fedden calls, his own "little Foreign Office ... the hub of resistance". The Chartwell visitors' book, meticulously maintained from 1922, records some 780 house guests, not all of them friends, but all grist to Churchill's mill. An example of the latter was Sir Maurice Hankey, Clerk of the Privy Council, who was Churchill's guest for dinner in April 1936. Hankey subsequently wrote, "I do not usually make a note of private conversations but some points arose which gave an indication of the line which Mr Churchill is likely to take in forthcoming debates (on munitions and supply) in Parliament". A week later, Reginald Leeper, a senior Foreign Office official and confident of Robert Vansittart, visited Churchill to convey their views on the need to use the League of Nations to counter German aggression. Vansittart wrote, "there is no time to lose. There is indeed a great danger that we shall be too late".Churchill also recorded visits to Chartwell by two more of his most important suppliers of confidential governmental information, Desmond Morton and Ralph Wigram, information which he used to "form and fortify my opinion about the Hitler Movement". Chartwell was also the scene of more direct attempts to prepare Britain for the coming conflict; in October 1939, when reappointed First Lord of the Admiralty on the outbreak of war, Churchill suggested an improvement for anti-aircraft shells; "Such shells could be filled with zinc ethyl which catches fire spontaneously ... A fraction of an ounce was demonstrated at Chartwell last summer".In 1938, Churchill, beset by financial concerns, again considered selling Chartwell, at which time the house was advertised as containing five reception rooms, nineteen bed and dressing rooms, eight bathrooms, set in eighty acres with three cottages on the estate and a heated and floodlit swimming pool.  He withdrew the sale after the industrialist Henry Strakosch agreed to take over his share portfolio, which had been hit heavily from losses on Wall Street, for three years and pay off significant associated debts.
What was the first name of the man who said, "I do not usually make a note of private conversations..."?