prefix : <http://example.org/>
prefix xsd: <http://www.w3.org/2001/XMLSchema#>
:User {
:name xsd:string ;
:email xsd:string /[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}/ ;
:phone xsd:string /\d{3}-\d{3}-\d{4}/ ;
:studentId xsd:string /[A-Z]{2,3}\d{4,6}/ ;
:website xsd:string /https?:\/\/[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}/ ? ;
:birthDate xsd:string /\d{4}-\d{2}-\d{2}/ ? ;
:ipAddress xsd:string /\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/ ? ;
}