test
node1
GO:0050896
response to stimulus
node2
GO:0009628
response to abiotic
stimulus
node1->node2
node7
GO:0009605
response to external
stimulus
node1->node7
node4
GO:0009612
response to
mechanical stimulus
node2->node4
node3
GO:0008150
biological_process
node3->node1
node5
BFO:0000015
process
node5->node3
node6
BFO:0000003
occurrent
node6->node5
node6->node6
node7->node4
node8
BFO:0000001
entity
node8->node6