Input: Read this: The pitch of complex tones can be ambiguous, meaning that two or more different pitches can be perceived, depending upon the observer. When the actual fundamental frequency can be precisely determined through physical measurement, it may differ from the perceived pitch because of overtones, also known as upper partials, harmonic or otherwise. A complex tone composed of two sine waves of 1000 and 1200 Hz may sometimes be heard as up to three pitches: two spectral pitches at 1000 and 1200 Hz, derived from the physical frequencies of the pure tones, and the combination tone at 200 Hz, corresponding to the repetition rate of the waveform. In a situation like this, the percept at 200 Hz is commonly referred to as the missing fundamental, which is often the greatest common divisor of the frequencies present.
Question: the percept at 200 Hz is commonly referred to as the missing fundamental, which is often?

Output: divisor of the frequencies present

Input: Read this: Its mission is to provide high quality education, training and research in the areas of science and technology to produce qualified professionals that can apply their knowledge and skills in the country's development.
Question: If the mission is achieved, professionals will apply what they've learned to what goal?

Output: the country's development

Input: Read this: Addition of lead(II) oxide lowers melting point, lowers viscosity of the melt, and increases refractive index. Lead oxide also facilitates solubility of other metal oxides and is used in colored glasses. The viscosity decrease of lead glass melt is very significant (roughly 100 times in comparison with soda glasses); this allows easier removal of bubbles and working at lower temperatures, hence its frequent use as an additive in vitreous enamels and glass solders. The high ionic radius of the Pb2+ ion renders it highly immobile in the matrix and hinders the movement of other ions; lead glasses therefore have high electrical resistance, about two orders of magnitude higher than soda-lime glass (108.5 vs 106.5 Ohmcm, DC at 250 C). For more details, see lead glass.
Question: What makes glass melt at a lower temperature?

Output: lead(II) oxide

Input: Read this: Resorting to this verbal device, however, did not protect the "Ancient Near East" from the inroads of "the Middle East." For example, a high point in the use of "Ancient Near East" was for Biblical scholars the Ancient Near Eastern Texts relating to the Old Testament by James Bennett Pritchard, a textbook of first edition dated 1950. The last great book written by Leonard Woolley, British archaeologist, excavator of ancient Ur and associate of T.E. Lawrence and Arthur Evans, was The Art of the Middle East, Including Persia, Mesopotamia and Palestine, published in 1961. Woolley had completed it in 1960 two weeks before his death. The geographical ranges in each case are identical.
Question: When did James Bennett Pritchard write his textbook?

Output:
1950