test
node1
BFO:0000003
occurrent
node1->node1
node5
BFO:0000015
process
node1->node5
node2
GO:0003674
molecular_function
node3
GO:0140104
molecular carrier
activity
node2->node3
node6
GO:0016530
metallochaperone
activity
node3->node6
node4
BFO:0000001
entity
node4->node1
node5->node2
node7
GO:0034986
iron chaperone
activity
node6->node7