test
node1
GO:0009725
response to hormone
node2
GO:0009733
response to auxin
node1->node2
node3
GO:0050896
response to stimulus
node4
GO:0009719
response to
endogenous stimulus
node3->node4
node6
GO:0042221
response to chemical
node3->node6
node4->node1
node5
GO:0008150
biological_process
node5->node3
node7
GO:0010033
response to organic
substance
node6->node7
node7->node1
node8
BFO:0000015
process
node8->node5
node9
BFO:0000003
occurrent
node9->node8
node10
BFO:0000001
entity
node10->node9