Extract the answer to the question from the following context. Question: What are the human organs that are unneccesary to insects? Context: Insect respiration is accomplished without lungs. Instead, the insect respiratory system uses a system of internal tubes and sacs through which gases either diffuse or are actively pumped, delivering oxygen directly to tissues that need it via their trachea (element 8 in numbered diagram). Since oxygen is delivered directly, the circulatory system is not used to carry oxygen, and is therefore greatly reduced. The insect circulatory system has no veins or arteries, and instead consists of little more than a single, perforated dorsal tube which pulses peristaltically. Toward the thorax, the dorsal tube (element 14) divides into chambers and acts like the insect's heart. The opposite end of the dorsal tube is like the aorta of the insect circulating the hemolymph, arthropods' fluid analog of blood, inside the body cavity.:61–65 Air is taken in through openings on the sides of the abdomen called spiracles.
Ans: lungs

Extract the answer to the question from the following context. Question: Are the beginning and ending dates for DST the same or changing every year? Context: Beginning and ending dates are roughly the reverse in the southern hemisphere. For example, mainland Chile observed DST from the second Saturday in October to the second Saturday in March, with transitions at 24:00 local time. The time difference between the United Kingdom and mainland Chile could therefore be five hours during the Northern summer, three hours during the Southern summer and four hours a few weeks per year because of mismatch of changing dates.
Ans: changing

Extract the answer to the question from the following context. Question: Who else was affected by the constitutional amendment besides the Soviets? Context: On October 25, 1989, the Supreme Soviet voted to eliminate special seats for the Communist Party and other official organizations in national and local elections, responding to sharp popular criticism that such reserved slots were undemocratic. After vigorous debate, the 542-member Supreme Soviet passed the measure 254-85 (with 36 abstentions). The decision required a constitutional amendment, ratified by the full congress, which met December 12–25. It also passed measures that would allow direct elections for presidents of each of the 15 constituent republics. Gorbachev strongly opposed such a move during debate but was defeated.
Ans: 15 constituent republics

Extract the answer to the question from the following context. Question: What was founded 59 years prior to the school where French elites are trained? Context: The institutes of technology and polytechnics have been in existence since at least the 18th century, but became popular after World War II with the expansion of engineering and applied science education, associated with the new needs created by industrialization. The world's first institution of technology, the Berg-Schola (today its legal successor is the University of Miskolc) was founded by the Court Chamber of Vienna in Selmecbánya, Kingdom of Hungary in 1735 in order to train specialists of precious metal and copper mining according to the requirements of the industrial revolution in Hungary. The oldest German Institute of Technology is the Braunschweig University of Technology (founded in 1745 as "Collegium Carolinum"). Another exception is the École Polytechnique, which has educated French élites since its foundation in 1794. In some cases, polytechnics or institutes of technology are engineering schools or technical colleges.
Ans: Berg-Schola