::= '<' ([^> ])* '>' /* A URI relative reference : RFC 3896 */ ::= ? ':' ::= ? ':' (|)? ::= '_:' (|) ::= ('?'|'$') (|) ::= + ('-' ()+)* <#A2Z> ::= [a-zA-Z] <#A2ZN> ::= [a-zA-Z0-9] ::= ::= [0-9]+ '.' [0-9]* ? | '.' ([0-9])+ ? | ([0-9])+ <#EXPONENT> ::= [eE] [+-]? [0-9]+ ::= "'" ( ([^'\\\n\r]) | ('\\' [^\n\r]) )* "'" ::= '"' ( ([^"\\\n\r]) | ('\\' [^\n\r]) )* '"' ::= [0-9]+ // The print value is the whitespace trimmed value after ::= [] ::= 'a' [] ::= 'BASE' [] ::= 'PREFIX' [] ::= 'SELECT' [] ::= 'DESCRIBE' [] ::= 'CONSTRUCT' [] ::= 'ASK' [] ::= 'DISTINCT' [] ::= 'WHERE' [] ::= 'LIMIT' [] ::= 'OFFSET' [] ::= 'ORDER' [] ::= 'BY' [] ::= 'FROM' [] ::= 'NAMED' [] ::= 'ASC' [] ::= 'DESC' [] ::= 'FILTER' [] ::= 'REGEXP' [] ::= 'GRAPH' [] ::= 'UNION' [] ::= 'OPTIONAL' [] ::= 'BOUND' [] ::= 'STR' [] ::= 'DATATYPE' [] ::= 'LANG' [] ::= 'isURI' [] ::= 'isBLANK' [] ::= 'isLITERAL' [] ::= 'REGEX' [] ::= 'TRUE' [] ::= 'FALSE' [] ::= '(' [] ::= ')' [] ::= '{' [] ::= '}' [] ::= '[' [] ::= ']' [] ::= ';' [] ::= ',' [] ::= '.' [] ::= '>' [] ::= '<' [] ::= '!' [] ::= '?' [] ::= ':' [] ::= '=' [] ::= '!=' [] ::= '<=' [] ::= '>=' [] ::= '||' [] ::= '&&' [] ::= '++' [] ::= '--' [] ::= '+' [] ::= '-' [] ::= '*' [] ::= '/' [] ::= '^^' [] ::= '@' <#NCCHAR1> ::= [A-Z] | [a-z] | [#x00C0-#x00D6] | [#x00D8-#x00F6] | [#x00F8-#x02FF] | [#x0370-#x037D] | [#x037F-#x1FFF] | [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFFFF] <#NCCHAR_END> ::= | '_' | '-' | [0-9] | #x00B7 <#NCCHAR_FULL> ::= | '.' <#NCNAME1> ::= (* )? <#NCNAME2> ::= '_' (* )? <#NCNAME_PREFIX> ::= *