test
node1
GO:0009314
response to radiation
node2
GO:0010212
response to ionizing
radiation
node1->node2
node9
GO:0010165
response to X-ray
node2->node9
node3
BFO:0000015
process
node4
GO:0008150
biological_process
node3->node4
node7
GO:0050896
response to stimulus
node4->node7
node5
BFO:0000001
entity
node6
BFO:0000003
occurrent
node5->node6
node6->node3
node6->node6
node8
GO:0009628
response to abiotic
stimulus
node7->node8
node8->node1