test
node1
GO:0010038
response to metal ion
node2
GO:0097501
stress response to
metal ion
node1->node2
node3
GO:0008150
biological_process
node4
GO:0050896
response to stimulus
node3->node4
node8
GO:0006950
response to stress
node4->node8
node7
GO:0042221
response to chemical
node4->node7
node5
GO:0010035
response to inorganic
substance
node5->node1
node6
BFO:0000003
occurrent
node6->node6
node9
BFO:0000015
process
node6->node9
node7->node5
node8->node2
node9->node3
node10
BFO:0000001
entity
node10->node6