{ "items" : [
    { "id" : "http://webisa.webdatacommons.org/prov/137300572"
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        "http://www.w3.org/ns/prov#value" : [ "A still further aspect of the present invention is a method for removing an obturator from a trocar, the method including: providing an obturator having an elongated shaft and a tip, the tip having a first diameter; providing a cannula having an elongated tube, the tube have a flexible and continuous open end having an inside diameter, the inside diameter being less than the first diameter of the" ] ,
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