test
node1
BFO:0000003
occurrent
node1->node1
node2
BFO:0000015
process
node1->node2
node3
GO:0003674
molecular_function
node2->node3
node8
GO:0005488
binding
node3->node8
node4
GO:1901363
heterocyclic compound
binding
node5
GO:0003676
nucleic acid binding
node4->node5
node6
GO:0097159
organic cyclic
compound binding
node6->node5
node7
BFO:0000001
entity
node7->node1
node8->node4
node8->node6