test
node1
BFO:0000001
entity
node2
BFO:0000003
occurrent
node1->node2
node2->node2
node5
BFO:0000015
process
node2->node5
node3
GO:0003824
catalytic activity
node4
GO:0016740
transferase activity
node3->node4
node7
GO:0016757
glycosyltransferase
activity
node4->node7
node6
GO:0003674
molecular_function
node5->node6
node6->node3