test
node1
GO:0009719
response to
endogenous stimulus
node2
GO:0071495
cellular response to
endogenous stimulus
node1->node2
node3
GO:0008150
biological_process
node4
GO:0050896
response to stimulus
node3->node4
node4->node1
node5
BFO:0000003
occurrent
node5->node5
node7
BFO:0000015
process
node5->node7
node6
BFO:0000001
entity
node6->node5
node7->node3