Can anyone help me convert this ANTLR 2.0 grammar file to ANTLR 3.0 syntax?

n3Directive0!:
                d:AT_PREFIX ns:nsprefix u:uriref
                {directive(#d, #ns, #u);}
                ;

propertyList![AST subj]
        : NAME_OP! anonnode[subj] propertyList[subj]
        | propValue[subj] (SEMI propertyList[subj])?
        |               // void : allows for [ :a :b ] and empty list "; .".
        ;

propValue [AST subj]
        :  v1:verb objectList[subj, #v1]
                // Reverse the subject and object
        |  v2:verbReverse subjectList[subj, #v2]
        ;

subjectList![AST oldSub, AST prop]
        : obj:item { emitQuad(#obj, prop, oldSub) ; }
                (COMMA subjectList[oldSub, prop])? ;

objectList! [AST subj, AST prop]
        : obj:item { emitQuad(subj,prop,#obj) ; }
                (COMMA objectList[subj, prop])?
    | // Allows for empty list ", ."
    ;

n3Directive0!:
                d=AT_PREFIX ns=nsprefix u=uriref
                {directive($d, $ns, $u);}
                ;