test
node1
TO:0000054
animal damage
response trait
node2
TO:0000261
insect damage
response trait
node1->node2
node3
CO_331:0000368
sweetpotato reaction
to moth trait
node2->node3
node4
TO:0000179
biotic plant stress
trait
node4->node1
node5
TO:0000387
plant trait
node6
TO:0000164
plant stress trait
node5->node6
node6->node4