test
node1
GO:0009987
cellular process
node2
GO:0008219
cell death
node1->node2
node5
GO:0012501
programmed cell death
node2->node5
node3
GO:0006915
apoptotic process
node4
GO:0033028
myeloid cell
apoptotic process
node3->node4
node5->node3
node6
BFO:0000001
entity
node7
BFO:0000003
occurrent
node6->node7
node7->node7
node8
BFO:0000015
process
node7->node8
node9
GO:0008150
biological_process
node8->node9
node9->node1