[["There are several stories about Excalibur. One says that it was given to Arthur by the \"Lady of the Lake\". Another says that it appeared, thrust through an anvil and a rock, to be drawn only by the rightful king. Still another says that Merlin gave it to Arthur, or that he placed it in the stone.", 40.0], ["The legendary sword, excalibur, was made by an elf of Avalon. Later on, his sister stole it from him and during that time, the scabbard was lost.", 30.0], ["It is a Welsh word that comes from Calad-Bolg (Hard Lightning). Later it was changed to Caliburn by Geoffrey of Monmouth. And today we know it as Excalibur, due to French. The legend of Excalibur is similar to the Irish hero, C\u00fa Chulainn who had a sword named Caladbolg; or to Norse Legend of Sigurd.", 1.0]]
where did excalibur come from
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