class noun_rel_modifier 
{
    %% For relative on verb modifier, we first adjoin rel mod on verbs
    %% the resulting S is then used to modify a noun as a relative
    %% Would be best done using MC-TAGs to put the 2 needed tree in a same bag
    %% WARNING: need to use some extra features to check agreement between noun
    %% and relative pronoun
    <: _rel_modifier;
    node(Root).cat = value(N2);
    - Foot::agreement; Foot = Foot::N;
    node(Root).bot.time = node(Foot).top.time;
    node(Root).bot.hum = node(Foot).top.hum;
    node(Root).bot.wh = node(Foot).top.wh;
    node(Root).bot.case = node(Foot).top.case;
    node(Root).bot.headcat = node(Foot).top.headcat;
    node(Root).bot.semtype = node(Foot).top.semtype;
    node(S).top.xarg.number = node(Foot).top.number;
    node(S).top.xarg.gender = node(Foot).top.gender;
    node(S).top.xarg.trace = value(-);
    node(S).top.xarg.case = value(~quemod);
    %% A relative construction may saturate an unsaturated noun
    %% example: Pierre qui roule n'amasse pas mousse
    node(Root).bot.sat = value(+);
}