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
node6
GO:0140640
catalytic activity,
acting on a nucleic
acid
node4->node6
node5
BFO:0000001
entity
node5->node1
node7
GO:0140097
catalytic activity,
acting on DNA
node6->node7