digraph G {
    margin=0;
    a [style=bold, label="and"];
    s [label="scream-01"];
    d [label="disappear-01"];
	r [label="raven"];
    
    a->s [label="op1"];
    a->d [label="op2"];
	s->r [label="ARG0"];
	d->r [label="ARG1"];
}