test
node1
GO:0050896
response to stimulus
node2
GO:0006950
response to stress
node1->node2
node7
GO:0006952
defense response
node2->node7
node3
BFO:0000003
occurrent
node3->node3
node4
BFO:0000015
process
node3->node4
node5
GO:0008150
biological_process
node4->node5
node5->node1
node6
BFO:0000001
entity
node6->node3
node8
GO:0006954
inflammatory response
node7->node8