test
node1
GO:0006807
nitrogen compound
metabolic process
node2
GO:0034641
cellular nitrogen
compound metabolic
process
node1->node2
node3
BFO:0000003
occurrent
node3->node3
node7
BFO:0000015
process
node3->node7
node4
GO:0008150
biological_process
node5
GO:0009987
cellular process
node4->node5
node9
GO:0008152
metabolic process
node4->node9
node6
GO:0044237
cellular metabolic
process
node5->node6
node6->node2
node7->node4
node8
BFO:0000001
entity
node8->node3
node9->node1
node9->node6