::= "<" (|"#"|"_") (~[">"," "])* ">" ::= ()? ":" ::= ()? ":" (|)? ::= "_:" (|) ::= "_:" (|) ::= ("?"|"$") (|) ::= ()+("-" ()+)? <#A2Z> ::= ["a"-"z","A"-"Z"] <#A2ZN> ::= ["a"-"z","A"-"Z","0"-"9"] ::= // ::= "0" ["x","X"] (["0"-"9","a"-"f","A"-"F"])+ ::= (["0"-"9"])+ "." (["0"-"9"])* ()?| "." (["0"-"9"])+ ()?| (["0"-"9"])+ <#EXPONENT> ::= ["e","E"] (["+","-"])? (["0"-"9"])+ ::= "'" ( (~["'","\\","\n","\r"]) | ("\\" ~["\n","\r"]) )* "'" ::= "\"" ( (~["\"","\\","\n","\r"]) | ("\\" ~["\n","\r"]) )* "\"" ::= (["0"-"9"])+ [] ::= "base" [] ::= "prefix" [] ::= "select" [] ::= "describe" [] ::= "construct" [] ::= "ask" [] ::= "distinct" [] ::= "limit" //[] ::= "with" //[] ::= "from" [] ::= "where" [] ::= "filter" [] ::= "regexp" [] ::= "graph" [] ::= "union" [] ::= "optional" [] ::= "bound" [] ::= "str" [] ::= "datatype" [] ::= "lang" [] ::= "isURI" [] ::= "isBlank" [] ::= "isLiteral" [] ::= "regexp" [] ::= "true" [] ::= "false" [] ::= "a" [] ::= "(" [] ::= ")" [] ::= "{" [] ::= "}" [] ::= "[" [] ::= "]" [] ::= ";" [] ::= "," [] ::= "." [] ::= ">" [] ::= "<" [] ::= "!" [] ::= "~" [] ::= "?" [] ::= ":" [] ::= "=" [] ::= "!=" [] ::= "<=" [] ::= ">=" [] ::= "||" [] ::= "&&" [] ::= "++" [] ::= "--" [] ::= "+" [] ::= "-" [] ::= "*" [] ::= "/" //[] ::= "&" //[] ::= "%" //[] ::= "<<" //[] ::= ">>" // ::= ("=~"|"~~") [] ::= "!~" [] ::= "^^" [] ::= "@" <#NCCHAR1> ::= ["A"-"Z"] | ["a"-"z"] | ["\u00C0"-"\u00D6"] | ["\u00D8"-"\u00F6"] | ["\u00F8"-"\u02FF"] | ["\u0370"-"\u037D"] | ["\u037F"-"\u1FFF"] |["\u200C"-"\u200D"] | ["\u2070"-"\u218F"] | ["\u2C00"-"\u2FEF"] |["\u3001"-"\uD7FF"] | ["\uF900"-"\uFFFF"] <#NCCHAR_END> ::= ( | "_" | "-" | ["0"-"9"] | "\u00B7" ) <#NCCHAR_FULL> ::= ( | "." ) <#NCNAME1> ::= (()* )? <#NCNAME2> ::= "_" (()* )? <#NCNAME_PREFIX> ::= ()*