digraph G {
    margin=0;
    w [style=bold, label="read-01"];
    r [label=<<FONT COLOR="red">S</FONT>>,fontname=helvetica];
    o [label=<<FONT COLOR="red">O[poss]</FONT>>,fontname=helvetica];
    
    w->r [label="ARG0"];
    w->o [label="ARG1"];
}