Input: Child labour
These scholars suggest, from their studies of economic and social data, that early 20th-century child labour in Europe and the United States ended in large part as a result of the economic development of the formal regulated economy, technology development and general prosperity. Child labour laws and ILO conventions came later. Edmonds suggests, even in contemporary times, the incidence of child labour in Vietnam has rapidly reduced following economic reforms and GDP growth. These scholars suggest economic engagement, emphasis on opening quality schools rather than more laws and expanding economically relevant skill development opportunities in the third world. International legal actions, such as trade sanctions increase child labour.

What caused child labour to decrease in the 20th century?
Output: economic development

Input: Architecture
Texts on architecture have been written since ancient time. These texts provided both general advice and specific formal prescriptions or canons. Some examples of canons are found in the writings of the 1st-century BCE Roman Architect Vitruvius. Some of the most important early examples of canonic architecture are religious.

What is another term for specific formal prescriptions?
Output: canons

Input: Portugal
The Portuguese language is derived from the Latin spoken by the romanized Pre-Roman peoples of the Iberian Peninsula around 2000 years ago—particularly the Celts, Tartessians, Lusitanians and Iberians. In the 15th and 16th centuries, the language spread worldwide as Portugal established a colonial and commercial empire between 1415 and 1999. Portuguese is now spoken as a native language in five different continents, with Brazil accounting for the largest number of native Portuguese speakers of any country (200 million speakers in 2012).

Between what years did Portugal establish a colonial and commercial empire?
Output: 1415 and 1999

Input: Northwestern University
The football team plays at Ryan Field (formerly known as Dyche Stadium); the basketball, wrestling, and volleyball teams play at Welsh-Ryan Arena. Northwestern's athletic teams are nicknamed the Wildcats. Before 1924, they were known as "The Purple" and unofficially as "The Fighting Methodists." The name Wildcats was bestowed upon the university in 1924 by Wallace Abbey, a writer for the Chicago Daily Tribune who wrote that even in a loss to the University of Chicago, "Football players had not come down from Evanston; wildcats would be a name better suited to [Coach Glenn] Thistletwaite's boys." The name was so popular that university board members made "wildcats" the official nickname just months later. In 1972, the student body voted to change the official nickname from "Wildcats" to "Purple Haze" but the new name never stuck.

Where do Northwestern's basketball, wrestling, and volleyball teams play?
Output:
Welsh-Ryan Arena