Input: Slavs
Throughout their history, Slavs came into contact with non-Slavic groups. In the postulated homeland region (present-day Ukraine), they had contacts with the Iranic Sarmatians and the Germanic Goths. After their subsequent spread, they began assimilating non-Slavic peoples. For example, in the Balkans, there were Paleo-Balkan peoples, such as Romanized and Hellenized (Jirecek Line) Illyrians, Thracians and Dacians, as well as Greeks and Celtic Scordisci. Over time, due to the larger number of Slavs, most descendants of the indigenous populations of the Balkans were Slavicized. The Thracians and Illyrians vanished from the population during this period although the modern Albanian nation claims descent from the Illyrians. Exceptions are Greece, where the lesser numbered Slavs scattered there came to be Hellenized (aided in time by more Greeks returning to Greece in the 9th century and the role of the church and administration) and Romania where Slavic people settled en route for present-day Greece, Republic of Macedonia, Bulgaria and East Thrace whereby the Slavic population had come to assimilate. Bulgars were also assimilated by local Slavs but their ruling status and subsequent land cast the nominal legacy of Bulgarian country and people onto all future generations. The Romance speakers within the fortified Dalmatian cities managed to retain their culture and language for a long time, as Dalmatian Romance was spoken until the high Middle Ages. However, they too were eventually assimilated into the body of Slavs.

Who vanished from the population of the Balkans?
Output: The Thracians and Illyrians

Input: Catalan language
In the Low Middle Ages, Catalan went through a golden age, reaching a peak of maturity and cultural richness. Examples include the work of Majorcan polymath Ramon Llull (12321315), the Four Great Chronicles (13th14th centuries), and the Valencian school of poetry culminating in Ausias March (13971459). By the 15th century, the city of Valencia had become the sociocultural center of the Crown of Aragon, and Catalan was present all over the Mediterranean world. During this period, the Royal Chancery propagated a highly standardized language. Catalan was widely used as an official language in Sicily until the 15th century, and in Sardinia until the 17th. During this period, the language was what Costa Carreras terms "one of the 'great languages' of medieval Europe".

Where was the center of the Crown of Aragon?
Output: city of Valencia

Input: Dutch language
Dutch vocabulary is predominantly Germanic in origin, with an additional share of loanwords of 20%. The main foreign influence on Dutch vocabulary since the 12th century and culminating in the French period has been French and (northern) French, accounting for an estimated 6.8%, or more than a third of all loanwords. Latin, that has been spoken for centuries in the south of the Low Countries, and has since then for centuries plaid a major role as the language of science and religion, follows with 6.1%. High German and Low German, influential until the mid of the 19th century, account for 2.7%, but are mostly unrecognizable since many German loanwords have been "Dutchified", e.g. German "Fremdling" become Dutch "vreemdeling". From English, Dutch has taken over words since the middle of the 19th century, as a consequence of the gaining power of Britain and the United States. The share of English loanwords is about 1.5%, but this number is still on the increase. Conversely, Dutch contributed many loanwords to English, accounting for 1.3%.

In the loanword sharing between Dutch and English, which language got the higher percentage of loanwords?
Output: Dutch

Input: Treaty
The United Nations Charter states that treaties must be registered with the UN to be invoked before it or enforced in its judiciary organ, the International Court of Justice. This was done to prevent the proliferation of secret treaties that occurred in the 19th and 20th century. Section 103 of the Charter also states that its members' obligations under it outweigh any competing obligations under other treaties.

Why does the United Nations Charter state that treaties must be registered with the United Nations?
Output:
to prevent the proliferation of secret treaties