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        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "In land warfare, sound ranging is a method of determining the coordinates of a hostile artillery battery using data derived from the sound of its guns (or mortar or rockets) firing.  The same methods can also be used to direct artillery fire at a position with known coordinates.Sound ranging is sometimes confused with sound location (acoustic location), which is location of the source of other sounds that may originate in the air, on the ground or on or below the water's surface." ] ,
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