class real_arg_xcomp_by_adj 
{
    <: real_arg_xcomp;
    <: real_arg_by_adj;
    SComp = ArgGroup;
    %% adj only needed for scomp and for whcomp
    %% or maybe something more complex for things like:
    %% ? quel livre paul demande si Jean l'a lu
    $arg.kind = value(scomp|prepscomp|prepvcomp|vcompcaus|acomp|vcomp|vcompprog);
%%    node(SArg).top.extraction = value(~-|adjx);
%%    node(SArg).top.extraction = value(~adjx);
    $xcomp_by_adj = value(+);
    node(S).adjwrap = value(no);
    node(S).adjright = value(no);
    %% the following blocks some constructions such as
    %% que veux-tu que je prenne et que j'apporte
    %% a better and less costly solution should be tried
    node(SComp).adj = value(no);
}