test
node1
BFO:0000003
occurrent
node1->node1
node2
BFO:0000015
process
node1->node2
node3
GO:0003674
molecular_function
node2->node3
node4
GO:0003824
catalytic activity
node3->node4
node5
GO:0016740
transferase activity
node4->node5
node7
GO:0016769
transferase activity,
transferring
nitrogenous groups
node5->node7
node6
BFO:0000001
entity
node6->node1