simple.txt

ae 1 2
ae 1 "a \"node\""
ae 2 "a \"node\""
le 1 2 "an \"edge\""
ns
hn 1
ns
hn 2
ln 2 "foo \"bar\""
ue 1 2
ns
hn "a \"node\""
# this is a comment
ae 1 4
ns
un 2