test
node1
GO:0008152
metabolic process
node2
GO:0019748
secondary metabolic
process
node1->node2
node6
GO:0071704
organic substance
metabolic process
node1->node6
node7
GO:0030638
polyketide metabolic
process
node2->node7
node3
BFO:0000003
occurrent
node3->node3
node4
BFO:0000015
process
node3->node4
node5
GO:0008150
biological_process
node4->node5
node5->node1
node6->node7
node8
BFO:0000001
entity
node8->node3