test
node1
GO:0008150
biological_process
node2
GO:0009987
cellular process
node1->node2
node3
GO:0006457
protein folding
node2->node3
node4
GO:0061077
chaperone-mediated
protein folding
node3->node4
node5
BFO:0000015
process
node5->node1
node6
BFO:0000001
entity
node7
BFO:0000003
occurrent
node6->node7
node7->node5
node7->node7