| http://www.w3.org/ns/prov#value | - There???s also the ethical question: How long do you let somebody believe that you???re the real thing? ???Sometimes it???s wonderful, and other times it???s not so wonderful,??? Graves says. ???It???s a fine line to walk.??? While substitute teaching last month, Graves was mobbed by a class of Maryland fourth- and fifth-graders who demanded autographs and insisted on calling him ???Mr. Obama.???
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