input: Please answer the following: Extract the answer to the question from the following context. Question: What kind of rainfall does the Sahara get? Context: The primary source of rain in the Sahara is the equatorial low a continuous belt of low-pressure systems near the equator which bring the brief, short and irregular rainy season to the Sahel and the southern Sahara. The Sahara doesn't lack precipitation because of a lack of moisture, but due to the lack of a precipitation-generating mechanism. Rainfall in this giant desert has to overcome the physical and atmospheric barriers that normally prevent the production of precipitation. The harsh climate of the Sahara is characterized by extremely low, unreliable, highly erratic rainfall; extremely high sunshine duration values; high temperatures year-round; negligible rates of relative humidity, a significant diurnal temperature variation and extremely high levels of potential evaporation which are the highest recorded worldwide.
++++++++++
output: extremely low, unreliable, highly erratic

Please answer this: Extract the answer to the question from the following context. Question: What does the TU in TU9 stand for? Context: The nine largest and most renowned Technische Universitäten in Germany have formed TU9 German Institutes of Technology as community of interests. Technische Universitäten normally have faculties or departements of natural sciences and often of economics but can also have units of cultural and social sciences and arts. RWTH Aachen, TU Dresden and TU München also have a faculty of medicine associated with university hospitals (Klinikum Aachen, University Hospital Dresden, Rechts der Isar Hospital).
++++++++
Answer: Technische Universitäten

Problem: Extract the answer to the question from the following context. Question: what is the second to last nation mentioned? Context: On 6 August 1940, Estonia was annexed by the Soviet Union as the Estonian SSR. The provisions in the Estonian constitution requiring a popular referendum to decide on joining a supra-national body were ignored. Instead the vote to join the Soviet Union was taken by those elected in the elections held the previous month. Additionally those who had failed to do their "political duty" of voting Estonia into the USSR, specifically those who had failed to have their passports stamped for voting, were condemned to death by Soviet tribunals. The repressions followed with the mass deportations carried out by the Soviets in Estonia on 14 June 1941. Many of the country's political and intellectual leaders were killed or deported to remote areas of the USSR by the Soviet authorities in 1940–1941. Repressive actions were also taken against thousands of ordinary people.

A: Estonia

Problem: Given the question: Extract the answer to the question from the following context. Question: Removal of what caused controversy? Context: The 'OtherOS' functionality was not present in the updated PS Slim models, and the feature was subsequently removed from previous versions of the PS3 as part of the machine's firmware update version 3.21 which was released on April 1, 2010; Sony cited security concerns as the rationale. The firmware update 3.21 was mandatory for access to the PlayStation Network. The removal caused some controversy; as the update removed officially advertised features from already sold products, and gave rise to several class action lawsuits aimed at making Sony return the feature or provide compensation.
++++++++++++++++++++++++++++++++
The answer is:
The 'OtherOS' functionality

input question: Extract the answer to the question from the following context. Question: Why are Chopins' music easy to identify? Context: Chopin's music is frequently played with rubato, "the practice in performance of disregarding strict time, 'robbing' some note-values for expressive effect". There are differing opinions as to how much, and what type, of rubato is appropriate for his works. Charles Rosen comments that "most of the written-out indications of rubato in Chopin are to be found in his mazurkas ... It is probable that Chopin used the older form of rubato so important to Mozart ... [where] the melody note in the right hand is delayed until after the note in the bass ... An allied form of this rubato is the arpeggiation of the chords thereby delaying the melody note; according to Chopin's pupil, Karol Mikuli, Chopin was firmly opposed to this practice."???
output answer: rubato

input question: Extract the answer to the question from the following context. Question: Why is it unwise to mix alcohol and antibiotics? Context: Interactions between alcohol and certain antibiotics may occur and may cause side-effects and decreased effectiveness of antibiotic therapy. While moderate alcohol consumption is unlikely to interfere with many common antibiotics, there are specific types of antibiotics with which alcohol consumption may cause serious side-effects. Therefore, potential risks of side-effects and effectiveness depend on the type of antibiotic administered. Despite the lack of a categorical counterindication, the belief that alcohol and antibiotics should never be mixed is widespread.???
output answer:
alcohol consumption may cause serious side-effects