Given a text passage, come up with an appropriate title for it. The title should accurately represent what the main focus of the passage is. The title of a passage may be present in the first few sentences of the passage and/or be referred to multiple times in the passage. The title should be 1-5 words long.

[Q]: The Avesta / vst / is the primary collection of religious texts of Zoroastrianism , composed in the otherwise unrecorded Avestan language .
[A]: Avesta

[Q]: Aquatic respiration is the process whereby an aquatic animal obtains oxygen from water .
[A]: Aquatic respiration

[Q]: Satsuma Province ( , Satsuma - no Kuni ) was an old province of Japan that is now the western half of Kagoshima Prefecture on the island of Kyushu . Its abbreviation is Sasshu ( ) .
[A]:
Satsuma Province