Input: Portugal
Portuguese is the official language of Portugal. Portuguese is a Romance language that originated in what is now Galicia and Northern Portugal, originating from Galician-Portuguese, which was the common language of the Galician and Portuguese people until the independence of Portugal. Particularly in the North of Portugal, there are still many similarities between the Galician culture and the Portuguese culture. Galicia is a consultative observer of the Community of Portuguese Language Countries. According to the Ethnologue of Languages, Portuguese and Spanish have a lexical similarity of 89% - educated speakers of each language can communicate easily with one another.

What was the common name of the Galician and Portuguese people?
Output: Galician-Portuguese

Input: Copyright infringement
In order to qualify for protection, a work must be an expression with a degree of originality, and it must be in a fixed medium, such as written down on paper or recorded digitally. The idea itself is not protected. That is, a copy of someone else's original idea is not infringing unless it copies that person's unique, tangible expression of the idea. Some of these limitations, especially regarding what qualifies as original, are embodied only in case law (judicial precedent), rather than in statutes.

What makes a copy of an original idea infringing?
Output: it copies that person's unique, tangible expression of the idea

Input: Political party
In a nonpartisan system, no official political parties exist, sometimes reflecting legal restrictions on political parties. In nonpartisan elections, each candidate is eligible for office on his or her own merits. In nonpartisan legislatures, there are no typically formal party alignments within the legislature. The administration of George Washington and the first few sessions of the United States Congress were nonpartisan. Washington also warned against political parties during his Farewell Address. In the United States, the unicameral legislature of Nebraska is nonpartisan but is elected and votes on informal party lines. In Canada, the territorial legislatures of the Northwest Territories and Nunavut are nonpartisan. In New Zealand, Tokelau has a nonpartisan parliament. Many city and county governments[vague] are nonpartisan. Nonpartisan elections and modes of governance are common outside of state institutions. Unless there are legal prohibitions against political parties, factions within nonpartisan systems often evolve into political parties.

What do factions within nonpartisan systems evolve into?
Output: political parties

Input: A cappella
In July 1943, as a result of the American Federation of Musicians boycott of US recording studios, the a cappella vocal group The Song Spinners had a best-seller with "Comin' In On A Wing And A Prayer". In the 1950s several recording groups, notably The Hi-Los and the Four Freshmen, introduced complex jazz harmonies to a cappella performances. The King's Singers are credited with promoting interest in small-group a cappella performances in the 1960s. In 1983 an a cappella group known as The Flying Pickets had a Christmas 'number one' in the UK with a cover of Yazoo's (known in the US as Yaz) "Only You". A cappella music attained renewed prominence from the late 1980s onward, spurred by the success of Top 40 recordings by artists such as The Manhattan Transfer, Bobby McFerrin, Huey Lewis and the News, All-4-One, The Nylons, Backstreet Boys and Boyz II Men.[citation needed]

Who is credited for first introducing elements of Jazz into a cappella?
Output:
The Hi-Los and the Four Freshmen