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By volume, dry air contains 78.09 % nitrogen, 20.95 % oxygen, 0.93 % argon, 0.04 % carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water vapor, on average around 1 % at sea level, and 0.4 % over the entire atmosphere. Air content and atmospheric pressure vary at different layers, and air suitable for use in photosynthesis by terrestrial plants and breathing of terrestrial animals is found only in Earth's troposphere and in artificial atmospheres.

Answer this question based on the passage: what is the percentage of o2 in air?

Stream of random thoughts: To answer the above question, the relevant sentence is: By volume, dry air contains 78.09 % nitrogen, 20.95 % oxygen, 0.93 % argon, 0.04 % carbon dioxide, and small amounts of other gases.... The answer is 20.95 %.
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Context: "You and Me Against the World" is a song written by Kenny Ascher and Paul Williams, recorded by Helen Reddy for her 1974 album Love Song for Jeffrey.

Question: who wrote you and me against the world?

Stream of random thoughts: The relevant information to answer the above question is: "You and Me Against the World" is a song written by Kenny Ascher and Paul Williams, recorded by Helen Reddy for her 1974 album Love Song for Jeffrey.... The answer is Kenny Ascher and Paul Williams.
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Nintendo released the Super Nintendo Entertainment System, a redesigned version of the Super Famicom, in North America for $ 199. It began shipping in limited quantities on August 23, 1991, with an official nationwide release date of September 9, 1991. The SNES was released in the United Kingdom and Ireland in April 1992 for 150, with a German release following a few weeks later.

How much did a super nintendo cost when it first came out?

Stream of random thoughts: To answer this question, we should know that: Nintendo released the Super Nintendo Entertainment System, a redesigned version of the Super Famicom, in North America for $ 199.... The answer is $ 199.
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The concept of a nocturnal park in Singapore was suggested in the 1980s by the former executive chairman of the Singapore Zoo, Dr Ong Swee Law. Constructed at a cost of S $ 63 million, the Night Safari was officially opened on 26 May 1994 and occupies 35 hectares (86 acres) of secondary rainforest adjacent to the Singapore Zoo and Upper Seletar Reservoir.

Answer this question based on the passage: where is the night safari located in singapore?
Stream of random thoughts: The relevant information is: Constructed at a cost of S $ 63 million, the Night Safari was officially opened on 26 May 1994 and occupies 35 hectares (86 acres) of secondary rainforest adjacent to the Singapore Zoo and Upper Seletar Reservoir.... The answer is adjacent to the Singapore Zoo and Upper Seletar Reservoir.
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