test
node1
BFO:0000003
occurrent
node1->node1
node7
BFO:0000015
process
node1->node7
node2
GO:0016740
transferase activity
node3
GO:0016741
transferase activity,
transferring
one-carbon groups
node2->node3
node4
GO:0008168
methyltransferase
activity
node3->node4
node5
GO:0098614
hydrogen selenide
methyltransferase
activity
node4->node5
node6
BFO:0000001
entity
node6->node1
node9
GO:0003674
molecular_function
node7->node9
node8
GO:0003824
catalytic activity
node8->node2
node9->node8