Article: On 14 June, while the world's attention was focused on the fall of Paris to Nazi Germany a day earlier, the Soviet military blockade on Estonia went into effect, two Soviet bombers downed the Finnish passenger aeroplane "Kaleva" flying from Tallinn to Helsinki carrying three diplomatic pouches from the US delegations in Tallinn, Riga and Helsinki. On 16 June, the Soviet Union invaded Estonia. The Red Army exited from their military bases in Estonia on 17 June. The following day, some 90,000 additional troops entered the country. In the face of overwhelming Soviet force, the Estonian government capitulated on 17 June 1940 to avoid bloodshed.

Question: When did the Soviet army initiate their blockade on Estonia?
Ans: 14 June

Article: The theory of special relativity finds a convenient formulation in Minkowski spacetime, a mathematical structure that combines three dimensions of space with a single dimension of time. In this formalism, distances in space can be measured by how long light takes to travel that distance, e.g., a light-year is a measure of distance, and a meter is now defined in terms of how far light travels in a certain amount of time. Two events in Minkowski spacetime are separated by an invariant interval, which can be either space-like, light-like, or time-like. Events that have a time-like separation cannot be simultaneous in any frame of reference, there must be a temporal component (and possibly a spatial one) to their separation. Events that have a space-like separation will be simultaneous in some frame of reference, and there is no frame of reference in which they do not have a spatial separation. Different observers may calculate different distances and different time intervals between two events, but the invariant interval between the events is independent of the observer (and his velocity).

Question: The invariant interval between events is independent of what?
Ans: of the observer (and his velocity)

Article: The San Diego Surf of the American Basketball Association is located in the city. The annual Farmers Insurance Open golf tournament (formerly the Buick Invitational) on the PGA Tour occurs at Torrey Pines Golf Course. This course was also the site of the 2008 U.S. Open Golf Championship. The San Diego Yacht Club hosted the America's Cup yacht races three times during the period 1988 to 1995. The amateur beach sport Over-the-line was invented in San Diego, and the annual world Over-the-line championships are held at Mission Bay every year.

Question: What tournament used to be known as the Buick Invitational?
Ans: Farmers Insurance Open

Article: The culture of Eritrea has been largely shaped by the country's location on the Red Sea coast. One of the most recognizable parts of Eritrean culture is the coffee ceremony. Coffee (Ge'ez bun) is offered when visiting friends, during festivities, or as a daily staple of life. During the coffee ceremony, there are traditions that are upheld. The coffee is served in three rounds: the first brew or round is called awel in Tigrinya meaning first, the second round is called kalaay meaning second, and the third round is called bereka meaning "to be blessed". If coffee is politely declined, then most likely tea ("shai" shahee) will instead be served.

Question: What do Eritrean's offer a person who declines coffee?
Ans:
most likely tea