Problem: After independence, Dutch was dropped as an official language and replaced by Malay. Yet the Indonesian language inherited many words from Dutch: words for everyday life as well as scientific and technological terms. One scholar argues that 20% of Indonesian words can be traced back to Dutch words, many of which are transliterated to reflect phonetic pronunciation e.g. kantoor (Dutch for "office") in Indonesian is kantor, while bus ("bus") becomes bis. In addition, many Indonesian words are calques on Dutch, for example, rumah sakit (Indonesian for "hospital") is calqued on the Dutch ziekenhuis (literally "house of the sick"), kebun binatang ("zoo") on dierentuin (literally "animal garden"), undang-undang dasar ("constitution") from grondwet (literally "ground law"). These account for some of the differences in vocabulary between Indonesian and Malay.
What Dutch word for a hospital was calqued into the Indonesian "rumah sakit"?
The answer is the following: ziekenhuis

Problem: Indigenous peoples of Brazil make up 0.4% of Brazil's population, or about 700,000 people, even though millions of Brazilians have some indigenous ancestry. Indigenous peoples are found in the entire territory of Brazil, although the majority of them live in Indian reservations in the North and Center-Western part of the country. On January 18, 2007, FUNAI reported that it had confirmed the presence of 67 different uncontacted tribes in Brazil, up from 40 in 2005. With this addition Brazil has now overtaken the island of New Guinea as the country having the largest number of uncontacted tribes.
How many different uncontacted tribes were confirmed in Brazil in 2007?
The answer is the following: 67

Problem: On the other hand, there are several language shift processes currently taking place. In Northern Catalonia, Catalan has followed the same trend as the other minority languages of France, with most of its native speakers being 60 or older (as of 2004). Catalan is studied as a foreign language by 30% of the primary education students, and by 15% of the secondary. The cultural association La Bressola promotes a network of community-run schools engaged in Catalan language immersion programs.
When was it determined that most native speakers in France are 60 or older?
The answer is the following: 2004

Problem: Many instruments today associated with popular music filled important roles in early classical music, such as bagpipes, vihuelas, hurdy-gurdies, and some woodwind instruments. On the other hand, instruments such as the acoustic guitar, once associated mainly with popular music, gained prominence in classical music in the 19th and 20th centuries.
What instrument gained prominence in the 19th and 20th century?
The answer is the following:
the acoustic guitar