String rule="[rule1:(?x   http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.semanticweb.org#Student) " +

         "( http://www.semanticweb.org#Student
http://www.semanticweb.org#GPA  ?gpa    )   +  greaterThan(?gpa, 3)

         " ->  (?x   http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.semanticweb.org#GoodUser )]";

GPA is a data property here, but it gives me error. I think the error is
in greaterThan(?score, 10)

What is the error ?

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