Input: Paper
The thickness of paper is often measured by caliper, which is typically given in thousandths of an inch in the United States and in thousandths of a mm in the rest of the world. Paper may be between 0.07 and 0.18 millimetres (0.0028 and 0.0071 in) thick.

What tool is often used in measuring the thickness of paper?
Output: caliper

Input: Article: Within Galicia are the Autopista AP-9 from Ferrol to Vigo and the Autopista AP-53 (also known as AG-53, because it was initially built by the Xunta de Galicia) from Santiago to Ourense. Additional roads under construction include Autovia A-54 from Santiago de Compostela to Lugo, and Autovia A-56 from Lugo to Ourense. The Xunta de Galicia has built roads connecting comarcal capitals, such as the aforementioned AG-53, Autovia AG-55 connecting A Coruna to Carballo or AG-41 connecting Pontevedra to Sanxenxo.

Now answer this question: Name another road they responsible for.

Output: AG-41

Article: The MDNA Tour, which further promoted the album, began in May 2012 in Tel Aviv, Israel. The tour has received positive critical reception, but featured controversial subjects such as violence, firearms, human rights, nudity and politics. Lawsuits threatened against Madonna have also been engaged from the tour. It was a box office success with a gross of $305.2 million from 88 sold-out shows, and became the highest-grossing tour of 2012 and the tenth highest-grossing tour of all time. At the 2013 Billboard Music Awards, Madonna won three trophies for Top Touring Artist, Top Dance Artist and Top Dance Album. Madonna was named the top-earning celebrity of the year by Forbes, earning an estimated $125 million, due to the success of the tour.

Question: Who named Madonna as the top-earning celebrity of the year?
Ans: Forbes

Here is a question about this article: The Xiongnu, a nomadic steppe confederation, defeated the Han in 200 BC and forced the Han to submit as a de facto inferior partner, but continued their raids on the Han borders. Emperor Wu of Han (r. 14187 BC) launched several military campaigns against them. The ultimate Han victory in these wars eventually forced the Xiongnu to accept vassal status as Han tributaries. These campaigns expanded Han sovereignty into the Tarim Basin of Central Asia, divided the Xiongnu into two separate confederations, and helped establish the vast trade network known as the Silk Road, which reached as far as the Mediterranean world. The territories north of Han's borders were quickly overrun by the nomadic Xianbei confederation. Emperor Wu also launched successful military expeditions in the south, annexing Nanyue in 111 BC and Dian in 109 BC, and in the Korean Peninsula where the Xuantu and Lelang Commanderies were established in 108 BC.
What is the answer to this question: Which confederation defeated the Han in 200 BC?
****
So... The Xiongnu

The problem: Answer a question about this article:
In the 13th century mendicant ordersthe Franciscans and the Dominicanswho swore vows of poverty and earned their living by begging, were approved by the papacy. Religious groups such as the Waldensians and the Humiliati also attempted to return to the life of early Christianity in the middle 12th and early 13th centuries, but they were condemned as heretical by the papacy. Others joined the Cathars, another heretical movement condemned by the papacy. In 1209, a crusade was preached against the Cathars, the Albigensian Crusade, which in combination with the medieval Inquisition, eliminated them.
What was the crusade against the Cathars called?
****
The answer: the Albigensian Crusade

The problem: Answer a question about this article:
London has been the setting for many works of literature. The literary centres of London have traditionally been hilly Hampstead and (since the early 20th century) Bloomsbury. Writers closely associated with the city are the diarist Samuel Pepys, noted for his eyewitness account of the Great Fire, Charles Dickens, whose representation of a foggy, snowy, grimy London of street sweepers and pickpockets has been a major influence on people's vision of early Victorian London, and Virginia Woolf, regarded as one of the foremost modernist literary figures of the 20th century.
Which author's novels painted a dismal portrait of Victorian London?
****
The answer:
Charles Dickens