class advneg 
{
    <: simple_categories;
    node Anchor : [cat:advneg, id: advneg];
    - shallow_auxiliary;
    node(Root).top.neg = value(+);
    node(Foot).bot.neg = value(-);
    desc.ht = value([arg0:@emptyarg_fs,arg1:@emptyarg_fs,arg2:@emptyarg_fs]);
    Root >> Anchor;
    - v::vagreement; Foot = v::V;
    node(Foot).bot.mode = value(~participle);
    Anchor +
        node(Foot).bot.mode = value(~infinitive|participle)
        |
        node(Foot).bot.mode = value(infinitive),
        node(Foot).bot.vlex = value(être|avoir)
        ;
    Foot < Anchor;
    node(Root).bot.inv = node(Foot).bot.inv;
    node(Root).bot.vlex = node(Foot).bot.vlex;
}