test
node1
GO:0008152
metabolic process
node2
GO:0044237
cellular metabolic
process
node1->node2
node4
GO:0071704
organic substance
metabolic process
node1->node4
node5
GO:0006081
cellular aldehyde
metabolic process
node2->node5
node3
BFO:0000003
occurrent
node3->node3
node7
BFO:0000015
process
node3->node7
node4->node5
node6
GO:0009987
cellular process
node6->node2
node8
GO:0008150
biological_process
node7->node8
node8->node1
node8->node6
node9
BFO:0000001
entity
node9->node3