"3-D MAN/CHARLES CHAN"  "WI? 9"
"VENUS II"  "WI? 9"
"HUMAN ROBOT"   "AVF 4"
"GORILLA-MAN"   "AVF 4"
"WASP/JANET VAN DYNE "  "AVF 4"
"FROST, CARMILLA"   "AA2 35"
"KILLRAVEN/JONATHAN R"  "AA2 35"
"3-D MAN/CHARLES CHAN"  "M/PRM 35"
"JONES, RICHARD MILHO"  "AVF 4"
"3-D MAN/CHARLES CHAN"  "AVF 4"
""  "AVF 4"
"  "    "AVF 4"

for(Vertex v : adj2.getVertices()) {
            System.out.println(v + ": " + adj2.getDownstreamNeighbors(v));
        }