Q: Extract the answer to the question from the following context. Question: Where else are students used as unpaid labor? Context: From the 1950s on, the students were also used for unpaid work at schools, where they cleaned and performed repairs. This practice has continued in the Russian Federation, where up to 21 days of the summer holidays is sometimes set aside for school works. By law, this is only allowed as part of specialized occupational training and with the students' and parents' permission, but those provisions are widely ignored. In 2012 there was an accident near city of Nalchik where a car killed several pupils cleaning up a highway shoulder during their "holiday work" as well as their teacher who was supervising them.
A: cleaning up a highway shoulder

Q: Extract the answer to the question from the following context. Question: What does this state have in addition to a state ballad and state lullaby? Context: The state song was not composed until 21 years after statehood, when a musical troupe led by Joseph E. Howard stopped in Butte in September 1910. A former member of the troupe who lived in Butte buttonholed Howard at an after-show party, asking him to compose a song about Montana and got another partygoer, the city editor for the Butte Miner newspaper, Charles C. Cohan, to help. The two men worked up a basic melody and lyrics in about a half-hour for the entertainment of party guests, then finished the song later that evening, with an arrangement worked up the following day. Upon arriving in Helena, Howard's troupe performed 12 encores of the new song to an enthusiastic audience and the governor proclaimed it the state song on the spot, though formal legislative recognition did not occur until 1945. Montana is one of only three states to have a "state ballad", "Montana Melody", chosen by the legislature in 1983. Montana was the first state to also adopt a State Lullaby.
A: state song

Q: Extract the answer to the question from the following context. Question: what is it that tells one word from another in a language Context: Although the Estonian orthography is generally guided by phonemic principles, with each grapheme corresponding to one phoneme, there are some historical and morphological deviations from this: for example preservation of the morpheme in declension of the word (writing b, g, d in places where p, k, t is pronounced) and in the use of 'i' and 'j'.[clarification needed] Where it is very impractical or impossible to type š and ž, they are substituted with sh and zh in some written texts, although this is considered incorrect. Otherwise, the h in sh represents a voiceless glottal fricative, as in Pasha (pas-ha); this also applies to some foreign names.
A: phonemic principles

Q: Extract the answer to the question from the following context. Question: What is not a 3G language Context: These 4G languages are less procedural than 3G languages. The benefit of 4GL is that it provides ways to obtain information without requiring the direct help of a programmer. Example of 4GL is SQL.
A:
SQL