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: During the filming of a TV commercial for a "Meat For Go" campaign set in London's Smithfield Market, stuntman Steve, disillusioned by the inanity of his job, absconds in an E-type Jaguar (one of the props) with a young actress/model, Dinah. After a visit to Oasis Swimming Pools, an open-air swimming-pool in central London, and a memorable scene in and around the Great Conservatory in the grounds of Syon House, they make their way across a wintry southern England towards Burgh Island, off the coast of Devon, which Dinah is contemplating buying, presumably to escape the pressures of her celebrity as the "Butcher Girl" on the back of the TV meat advertising campaign. This act of rebellion is cynically exploited by the advertising executive behind the campaign, Leon Zissell, who deputes two of his henchmen to pursue the fleeing couple.
On their journey, Steve and Dinah encounter first a group of proto-hippies, squatting in MOD-owned buildings on Salisbury Plain (some of this sequence was shot in the evacuated village of Imber) and then an unhappily married middle-aged couple (Yootha Joyce and Robin Bailey) in the opulent surroundings of the Royal Crescent in Bath, Somerset. Steve also plans to visit his boyhood hero, Louie, whose youth club in London's East End he attended, and who has since relocated to Devon.
Having fled the police, and Leon Zissell's henchmen, after a fancy-dress party in the Roman Baths at Bath, Steve and Dinah (with the rest of Steve's gang - and the police - in hot pursuit) make their way towards Devon. Steve's encounter with Louie is disappointing. Louie recognises Dinah instantly, because of her TV celebrity, but fails to recognise Steve and misremembers his name, even after being introduced. Dinah's island also proves to be disappointing. At low tide, it is reachable from the mainland, and Zissell, who is clearly besotted with Dinah, has already arrived.
What are the names of the couple who make their way across England towards Burgh Island?

Passage: In Waters' absence, Gilmour had been recruiting musicians for a new project. Months previously, keyboardist Jon Carin had jammed with Gilmour at his Hookend studio, where he composed the chord progression that became "Learning to Fly", and so was invited onto the team. Gilmour invited Bob Ezrin (co-producer of 1979's The Wall) to help consolidate their material; Ezrin had turned down Waters' offer of a role on the development of his new solo album, Radio K.A.O.S., saying it was "far easier for Dave and I to do our version of a Floyd record". Ezrin arrived in England in mid-1986 for what Gilmour later described as "mucking about with a lot of demos".At this stage, there was no commitment to a new Pink Floyd release, and Gilmour maintained that the material might become his third solo album. CBS representative Stephen Ralbovsky hoped for a new Pink Floyd album, but in a meeting in November 1986, told Gilmour and Ezrin that the music "doesn't sound a fucking thing like Pink Floyd". Gilmour later said that the new project was difficult without Waters. He experimented with songwriters such as Eric Stewart and Roger McGough, but eventually settled on Anthony Moore, who was credited as co-writer of "Learning to Fly" and "On the Turning Away". Whereas many prior Pink Floyd albums are concept albums, Gilmour settled for the more conventional approach of a collection of songs without a thematic link. By the end of that year, he had decided to make the material into a Pink Floyd project.

What is the first name of the person who had turned down Waters' offer of a role on the development of his new solo album?