test
node1
GO:0071704
organic substance
metabolic process
node2
GO:1901360
organic cyclic
compound metabolic
process
node1->node2
node8
GO:1901564
organonitrogen
compound metabolic
process
node1->node8
node6
GO:0033013
tetrapyrrole
metabolic process
node2->node6
node3
GO:0008152
metabolic process
node3->node1
node4
GO:0044237
cellular metabolic
process
node3->node4
node7
GO:0006807
nitrogen compound
metabolic process
node3->node7
node15
GO:0042440
pigment metabolic
process
node3->node15
node5
GO:0046483
heterocycle metabolic
process
node4->node5
node14
GO:0006725
cellular aromatic
compound metabolic
process
node4->node14
node5->node6
node9
GO:0006778
porphyrin-containing
compound metabolic
process
node6->node9
node7->node8
node8->node6
node17
GO:0042168
heme metabolic
process
node9->node17
node10
GO:0008150
biological_process
node10->node3
node11
GO:0009987
cellular process
node10->node11
node11->node4
node12
BFO:0000003
occurrent
node12->node12
node13
BFO:0000015
process
node12->node13
node13->node10
node14->node6
node15->node17
node16
BFO:0000001
entity
node16->node12