test
node1
GO:0042221
response to chemical
node2
GO:0009593
detection of chemical
stimulus
node1->node2
node6
GO:0003032
detection of oxygen
node2->node6
node3
BFO:0000001
entity
node4
BFO:0000003
occurrent
node3->node4
node4->node4
node10
BFO:0000015
process
node4->node10
node5
GO:0070482
response to oxygen
levels
node5->node6
node7
GO:0050896
response to stimulus
node7->node1
node8
GO:0051606
detection of stimulus
node7->node8
node9
GO:0009628
response to abiotic
stimulus
node7->node9
node8->node2
node9->node5
node11
GO:0008150
biological_process
node10->node11
node11->node7