test
node1
BFO:0000003
occurrent
node1->node1
node6
BFO:0000015
process
node1->node6
node2
BFO:0000001
entity
node2->node1
node3
GO:0016491
oxidoreductase
activity
node4
GO:0016645
oxidoreductase
activity, acting on
the CH-NH group of
donors
node3->node4
node8
GO:0030268
methylenetetrahydrom
thanopterin
dehydrogenase
activity
node4->node8
node5
GO:0003824
catalytic activity
node5->node3
node7
GO:0003674
molecular_function
node6->node7
node7->node5