test
node1
GO:0007049
cell cycle
node2
GO:0022402
cell cycle process
node1->node2
node3
BFO:0000003
occurrent
node3->node3
node4
BFO:0000015
process
node3->node4
node5
GO:0008150
biological_process
node4->node5
node6
GO:0009987
cellular process
node5->node6
node6->node1
node6->node2
node7
BFO:0000001
entity
node7->node3