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: In mid-2011, Oklahoma had a civilian labor force of 1.7 million and non-farm employment fluctuated around 1.5 million. The government sector provides the most jobs, with 339,300 in 2011, followed by the transportation and utilities sector, providing 279,500 jobs, and the sectors of education, business, and manufacturing, providing 207,800, 177,400, and 132,700 jobs, respectively. Among the state's largest industries, the aerospace sector generates $11 billion annually.Tulsa is home to the largest airline maintenance base in the world, which serves as the global maintenance and engineering headquarters for American Airlines. In total, aerospace accounts for more than 10 percent of Oklahoma's industrial output, and it is one of the top 10 states in aerospace engine manufacturing. Because of its position in the center of the United States, Oklahoma is also among the top states for logistic centers, and a major contributor to weather-related research.The state is the top manufacturer of tires in North America and contains one of the fastest-growing biotechnology industries in the nation. In 2005, international exports from Oklahoma's manufacturing industry totaled $4.3 billion, accounting for 3.6 percent of its economic impact. Tire manufacturing, meat processing, oil and gas equipment manufacturing, and air conditioner manufacturing are the state's largest manufacturing industries.
What state has the largest airline maintenance base in the world?

Passage: This article is about the residential palace. For the other palace on the same grounds, see Schloss Favorite, Ludwigsburg. For the city, see Ludwigsburg. For the porcelain manufactory, see Ludwigsburg porcelain.
Ludwigsburg Palace (Residenzschloss Ludwigsburg), also known as the "Versailles of Swabia", is a 452-room palace complex of 18 buildings located in Ludwigsburg, Baden-Wurttemberg, Germany. Its total area, including the gardens, is 32 ha (79 acres)the largest palatial estate in the country. The palace has four wings: the northern wing, the Alter Hauptbau, is the oldest and was used as a ducal residence; the east and west wings were used for court purposes and housing guests and courtiers; the southern wing, the Neuer Hauptbau, was built to house more court functions and was later used as a residence.
Eberhard Louis, Duke of Wurttemberg, appointed Philipp Joseph Jenisch to direct the work and construction began in 1704. In 1707, Jenisch was replaced with Johann Friedrich Nette, who completed the majority of the palace and surrounding gardens. Nette died in 1714, and Donato Giuseppe Frisoni finished much of the palace facades. In the final year of construction, Eberhard Louis died and the Neue Hauptbau's interiors were left incomplete. Charles Eugene's court architect, Philippe de La Guepiere, completed and refurbished parts of the New Hauptbau in the Rococo style, especially the palace theatre. Charles Eugene abandoned the palace for Stuttgart in 1775. Duke Frederick II, later King Frederick I, began using Ludwigsburg as his summer residence in the last years of Charles Eugene's reign. Frederick and his wife Charlotte, Princess Royal, resided at Ludwigsburg and employed Nikolaus Friedrich von Thouret to renovate the palace in the Neoclassical style. Thouret converted much of Ludwigsburg's interiors over the reign of Frederick and later life of Charlotte. As a result of each architect's work, Ludwigsburg is a combination of Baroque, Rococo, Neoclassical, and Empire style architecture.
The constitutions of the Free People's State and Kingdom of Wurttemberg were ratified at Ludwigsburg Palace in 1919 and 1819, respectively. It was the residence for four of Wurttemberg's monarchs and some other members of the House of Wurttemberg and their families. The palace was opened to the public in 1918 and then survived World War II intact. It later underwent periods of restoration in the 1950s, 1960s, and 1990s and again for the palace's 300th anniversary in 2004. The palace had more than 350,000 visitors in 2017 and has hosted the Ludwigsburg Festival every year since 1947.
Surrounding the palace are the Blooming Baroque (Bluhendes Barock) gardens, arranged in 1954 as they might have appeared in 1800. Nearby is Schloss Favorite, a hunting lodge built in 1717 by Frisoni. Within the palace are two museums operated by the Landesmuseum Wurttemberg dedicated to fashion and porcelain respectively.
What is the name of the gardens surrounding the palace that was opened to the public in 1918?

Passage: Practical Pig, Fiddler Pig and Fifer Pig are three brothers who build their own houses with bricks, sticks and straw respectively. Practical Pig warns his brothers to build their house with "War Savings Certificate" bricks so that the house will be a solid defence against the marauding Wolf. Fifer and Fiddler ignore him and continue to play, singing "Who's Afraid of the Big Bad Wolf?".
As they are singing, the Big Bad Wolf in Nazi swastika regalia, attacks the two spendthrifts, and blows Fifer's straw house down. Fifer manages to escape and hides at Fiddler's stick house but the Wolf also blows it down. The two pigs run and hide at Practical's brick house. The Wolf then tries to blow down the strong brick house (losing his clothing in the process), but is unable to make much progress as the bricks have made a strong foundation.
Finally, Practical Pig chases the wolf away in a flurry of bricks that unerringly hit the Nazi marauder in his rear. The three pigs then sing "Who's Afraid of the Big Bad Wolf?" but with the caution that their house has to be in order to keep the wolf away.
A pastiche of war scenes follows, each of which ends with a message, such as an aircraft shooting out the message, "Invest in Victory". Other messages show the importance of spending less, and lending savings to create the weapons of war. Purchasing war savings certificates, are sold in a "Five for Four" arrangement,.
What does Fiddler Pig use to build their house?