test
node1
GO:0008152
metabolic process
node2
GO:0044237
cellular metabolic
process
node1->node2
node3
GO:0006725
cellular aromatic
compound metabolic
process
node2->node3
node4
BFO:0000003
occurrent
node4->node4
node6
BFO:0000015
process
node4->node6
node5
GO:0009987
cellular process
node5->node2
node7
GO:0008150
biological_process
node6->node7
node7->node1
node7->node5
node8
BFO:0000001
entity
node8->node4