Problem: Please answer a question about the following article about Detroit:
The city slopes gently from the northwest to southeast on a till plain composed largely of glacial and lake clay. The most notable topographical feature in the city is the Detroit Moraine, a broad clay ridge on which the older portions of Detroit and Windsor sit atop, rising approximately 62 feet (19 m) above the river at its highest point. The highest elevation in the city is located directly north of Gorham Playground on the northwest side approximately three blocks south of 8 Mile Road, at a height of 675 to 680 feet (206 to 207 m). Detroit's lowest elevation is along the Detroit River, at a surface height of 572 feet (174 m).
What material is the Detroit Moraine composed of?
A: clay
Problem: Please answer a question about the following article about Pope John XXIII:
On 30 November 1934, he was appointed Apostolic Delegate to Turkey and Greece and titular archbishop of Mesembria, Bulgaria. Thus, he is known as "the Turcophile Pope," by the Turkish society which is predominantly Muslim. Roncalli took up this post in 1935 and used his office to help the Jewish underground in saving thousands of refugees in Europe, leading some to consider him to be a Righteous Gentile (see Pope John XXIII and Judaism). In October 1935, he led Bulgarian pilgrims to Rome and introduced them to Pope Pius XI on 14 October.
When was he appointed Apostolic Delegate to Turkey and Greece?
A: 30 November 1934
Problem: Please answer a question about the following article about Madonna (entertainer):
The next year Madonna and Maverick sued Warner Music Group and its former parent company Time Warner, claiming that mismanagement of resources and poor bookkeeping had cost the company millions of dollars. In return, Warner filed a countersuit alleging that Maverick had lost tens of millions of dollars on its own. The dispute was resolved when the Maverick shares, owned by Madonna and Ronnie Dashev, were purchased by Warner. Madonna and Dashev's company became a wholly owned subsidiary of Warner Music, but Madonna was still signed to Warner under a separate recording contract.
Maverick became a wholly owned  subsidiary of which company?
A: Warner Music
Problem: Please answer a question about the following article about History of science:
Modern geology, like modern chemistry, gradually evolved during the 18th and early 19th centuries. Benoît de Maillet and the Comte de Buffon saw the Earth as much older than the 6,000 years envisioned by biblical scholars. Jean-Étienne Guettard and Nicolas Desmarest hiked central France and recorded their observations on some of the first geological maps. Aided by chemical experimentation, naturalists such as Scotland's John Walker, Sweden's Torbern Bergman, and Germany's Abraham Werner created comprehensive classification systems for rocks and minerals—a collective achievement that transformed geology into a cutting edge field by the end of the eighteenth century. These early geologists also proposed a generalized interpretations of Earth history that led James Hutton, Georges Cuvier and Alexandre Brongniart, following in the steps of Steno, to argue that layers of rock could be dated by the fossils they contained: a principle first applied to the geology of the Paris Basin. The use of index fossils became a powerful tool for making geological maps, because it allowed geologists to correlate the rocks in one locality with those of similar age in other, distant localities. Over the first half of the 19th century, geologists such as Charles Lyell, Adam Sedgwick, and Roderick Murchison applied the new technique to rocks throughout Europe and eastern North America, setting the stage for more detailed, government-funded mapping projects in later decades.
What are used to create geological maps?
A:
index fossils