test
node1
GO:0008150
biological_process
node2
GO:0008152
metabolic process
node1->node2
node9
GO:0009987
cellular process
node1->node9
node5
GO:0071704
organic substance
metabolic process
node2->node5
node7
GO:0044237
cellular metabolic
process
node2->node7
node3
BFO:0000003
occurrent
node3->node3
node4
BFO:0000015
process
node3->node4
node4->node1
node6
GO:0018942
organometal metabolic
process
node5->node6
node7->node6
node8
BFO:0000001
entity
node8->node3
node9->node7