test
node1
GO:0042221
response to chemical
node2
GO:0009636
response to toxic
substance
node1->node2
node4
GO:0098754
detoxification
node2->node4
node3
GO:0008150
biological_process
node3->node4
node7
GO:0050896
response to stimulus
node3->node7
node5
BFO:0000001
entity
node6
BFO:0000003
occurrent
node5->node6
node6->node6
node8
BFO:0000015
process
node6->node8
node7->node1
node8->node3