test
node1
GO:0008150
biological_process
node2
GO:0050896
response to stimulus
node1->node2
node3
GO:0009605
response to external
stimulus
node2->node3
node4
GO:0042465
kinesis
node3->node4
node6
GO:0042468
klinokinesis
node4->node6
node5
BFO:0000015
process
node5->node1
node7
BFO:0000003
occurrent
node7->node5
node7->node7
node8
BFO:0000001
entity
node8->node7