class _rel_modifier 
{
    %% generic class to attach a relative on an antecedent
    %% the antecedent maybe an NP (N2) or some adverbs acting as pronoun
    - shallow_auxiliary;
    %%    node(Root).bot = node(Foot).top;
    Root >> Incise; node Incise : [cat:incise, id:incise, type:std];
    node(Incise).top.sync = node(Incise).bot.sync;
    node(Incise).top.sync = value(-);
    node(Incise).adjleft = value(atmostone);
    node(Incise).adjright = value(sync);
    Incise >> S;
    Foot < Incise;
    node S : [cat:S,
              id:SRel,
              top:[sat: -,
                   mode: conditional|subjonctive|indicative|adjective|infinitive,
                   extraction: rel
                   ]];
    desc.dependency = value('dep.relative');
}