Assertion: calcium carbide | /r/AtLocation | the receptacle
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Source sentences:
text: The upper part, "E," is a small reservoir in which water is put; this water is released in small quantities through the tube at the right, and, flowing into the lower part of the lamp, comes in contact with the calcium carbide, which is in the receptacle "P"; the gas thus generated is held in the reservoir "G," and when sufficient pressure has been created is forced out through the burner "B." The Great Round World