Article: Over the course of adolescence, the amount of white matter in the brain increases linearly, while the amount of grey matter in the brain follows an inverted-U pattern. Through a process called synaptic pruning, unnecessary neuronal connections in the brain are eliminated and the amount of grey matter is pared down. However, this does not mean that the brain loses functionality; rather, it becomes more efficient due to increased myelination (insulation of axons) and the reduction of unused pathways.

Question: Does the brain become more or less efficient as a result of synaptic pruning?
Ans: more efficient

Article: The Vietnam War is often regarded as a low point for the U.S. Army due to the use of drafted personnel, the unpopularity of the war with the American public, and frustrating restrictions placed on the military by American political leaders. While American forces had been stationed in the Republic of Vietnam since 1959, in intelligence & advising/training roles, they did not deploy in large numbers until 1965, after the Gulf of Tonkin Incident. American forces effectively established and maintained control of the "traditional" battlefield, however they struggled to counter the guerrilla hit and run tactics of the communist Viet Cong and the North Vietnamese Army. On a tactical level, American soldiers (and the U.S. military as a whole) did not lose a sizable battle.

Question: What caused American forces to deploy in large number in 1965?
Ans: Gulf of Tonkin Incident

Article: In 2008, TCM won a Peabody Award for excellence in broadcasting. In April 2010, Turner Classic Movies held the first TCM Classic Film Festival, an event now held annually at the Grauman's Chinese Theater and the Grauman's Egyptian Theater in Hollywood. Hosted by Robert Osborne, the four-day long annual festival celebrates Hollywood and its movies, and features celebrity appearances, special events, and screenings of around 50 classic movies including several newly restored by the Film Foundation, an organization devoted to preserving Hollywood's classic film legacy.

Question: Where is Grauman's Chinese Theater located?
Ans: Hollywood

Article: Usually, a federation is formed at two levels: the central government and the regions (states, provinces, territories), and little to nothing is said about second or third level administrative political entities. Brazil is an exception, because the 1988 Constitution included the municipalities as autonomous political entities making the federation tripartite, encompassing the Union, the States, and the municipalities. Each state is divided into municipalities (municipios) with their own legislative council (camara de vereadores) and a mayor (prefeito), which are partly autonomous from both Federal and State Government. Each municipality has a "little constitution", called "organic law" (lei organica). Mexico is an intermediate case, in that municipalities are granted full-autonomy by the federal constitution and their existence as autonomous entities (municipio libre, "free municipality") is established by the federal government and cannot be revoked by the states' constitutions. Moreover, the federal constitution determines which powers and competencies belong exclusively to the municipalities and not to the constituent states. However, municipalities do not have an elected legislative assembly.

Question: Why is Brazil an exception?
Ans:
because the 1988 Constitution included the municipalities as autonomous political entities making the federation tripartite