TASK DEFINITION: In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
PROBLEM: What needs consistency?, Context: The simplest valve gears give events of fixed length during the engine cycle and often make the engine rotate in only one direction. Most however have a reversing mechanism which additionally can provide means for saving steam as speed and momentum are gained by gradually "shortening the cutoff" or rather, shortening the admission event; this in turn proportionately lengthens the expansion period. However, as one and the same valve usually controls both steam flows, a short cutoff at admission adversely affects the exhaust and compression periods which should ideally always be kept fairly constant; if the exhaust event is too brief, the totality of the exhaust steam cannot evacuate the cylinder, choking it and giving excessive compression ("kick back").[citation needed]

SOLUTION: exhaust and compression periods

PROBLEM: Which people's architectural spaces where destroyed?, Context: On 17 December 1941, seven Protestant regional church confederations issued a statement agreeing with the policy of forcing Jews to wear the yellow badge, "since after his bitter experience Luther had already suggested preventive measures against the Jews and their expulsion from German territory." According to Daniel Goldhagen, Bishop Martin Sasse, a leading Protestant churchman, published a compendium of Luther's writings shortly after Kristallnacht, for which Diarmaid MacCulloch, Professor of the History of the Church in the University of Oxford argued that Luther's writing was a "blueprint." Sasse applauded the burning of the synagogues and the coincidence of the day, writing in the introduction, "On 10 November 1938, on Luther's birthday, the synagogues are burning in Germany." The German people, he urged, ought to heed these words "of the greatest antisemite of his time, the warner of his people against the Jews."

SOLUTION: the Jews

PROBLEM: Shorter race Fredricks won a medal for?, Context: Inline hockey was first played in 1995 and has also become more and more popular in the last years. The Women's inline hockey National Team participated in the 2008 FIRS World Championships. Namibia is the home for one of the toughest footraces in the world, the Namibian ultra marathon. The most famous athlete from Namibia is Frankie Fredericks, sprinter (100 and 200 m). He won four Olympic silver medals (1992, 1996) and also has medals from several World Athletics Championships. He is also known for humanitarian activities in Namibia and beyond.

SOLUTION:
100