Problem: German beacons operated on the medium-frequency band and the signals involved a two-letter Morse identifier followed by a lengthy time-lapse which enabled the Luftwaffe crews to determine the signal's bearing. The Meacon system involved separate locations for a receiver with a directional aerial and a transmitter. The receipt of the German signal by the receiver was duly passed to the transmitter, the signal to be repeated. The action did not guarantee automatic success. If the German bomber flew closer to its own beam than the Meacon then the former signal would come through the stronger on the direction finder. The reverse would apply only if the meacon were closer.
The German beacons used what frequency band?
The answer is the following: medium

Problem: Innate bisexuality is an idea introduced by Sigmund Freud. According to this theory, all humans are born bisexual in a very broad sense of the term, that of incorporating general aspects of both sexes. In Freud's view, this was true anatomically and therefore also psychologically, with sexual attraction to both sexes being one part of this psychological bisexuality. Freud believed that in the course of sexual development the masculine side would normally become dominant in men and the feminine side in women, but that as adults everyone still has desires derived from both the masculine and the feminine sides of their natures. Freud did not claim that everyone is bisexual in the sense of feeling the same level of sexual attraction to both genders.
What idea did Sigmund Freud bring to the table?
The answer is the following: Innate bisexuality

Problem: Notable Greek scientists of modern times include Dimitrios Galanos, Georgios Papanikolaou (inventor of the Pap test), Nicholas Negroponte, Constantin Carathéodory (known for the Carathéodory theorems and Carathéodory conjecture), Manolis Andronikos (discovered the tomb of Philip II of Macedon in Vergina), Michael Dertouzos, John Argyris, Panagiotis Kondylis, John Iliopoulos (2007 Dirac Prize for his contributions on the physics of the charm quark, a major contribution to the birth of the Standard Model, the modern theory of Elementary Particles), Joseph Sifakis (2007 Turing Award, the "Nobel Prize" of Computer Science), Christos Papadimitriou (2002 Knuth Prize, 2012 Gödel Prize), Mihalis Yannakakis (2005 Knuth Prize), Dimitri Nanopoulos and Helene Ahrweiler.
What Greek won the 2005 Knuth prize?
The answer is the following: Mihalis Yannakakis

Problem: Oklahoma's centennial celebration was named the top event in the United States for 2007 by the American Bus Association, and consisted of multiple celebrations saving with the 100th anniversary of statehood on November 16, 2007. Annual ethnic festivals and events take place throughout the state such as Native American powwows and ceremonial events, and include festivals (as examples) in Scottish, Irish, German, Italian, Vietnamese, Chinese, Czech, Jewish, Arab, Mexican and African-American communities depicting cultural heritage or traditions.
When was the exact hundredth anniversary of Oklahoma's statehood?
The answer is the following:
November 16, 2007