digraph G {
    margin=0;
    w [label=<<FONT COLOR="blue" FACE="helvetica">want-01</FONT>>];
    {rank=same;
    r [label="raven"];
    l [label="learn-01"];
    }
    
    w->r [label=<<FONT COLOR="blue" FACE="helvetica">ARG0</FONT>>];
    w->l [label=<<FONT COLOR="blue" FACE="helvetica">ARG1</FONT>>];
    r->l [label="ARG0",dir=back];
}