test
node1
GO:0009628
response to abiotic
stimulus
node2
GO:0009582
detection of abiotic
stimulus
node1->node2
node3
GO:0008150
biological_process
node4
GO:0050896
response to stimulus
node3->node4
node4->node1
node7
GO:0051606
detection of stimulus
node4->node7
node5
BFO:0000003
occurrent
node5->node5
node6
BFO:0000015
process
node5->node6
node6->node3
node7->node2
node8
BFO:0000001
entity
node8->node5