Sentence:  Petitioner was not entitled , either in the administrative hearing at the Department of Justice or at his trial , to inspect the original report of the Federal Bureau of Investigation , since he was furnished a resume of it , did not challenge its accuracy , and <WSD>showed</WSD> no particular need for the original report . 
Meaning of the word marked with <WSD> tags:  establish the validity of something, as by an example, explanation or experiment