test
node1
BFO:0000015
process
node2
GO:0003674
molecular_function
node1->node2
node5
GO:0003824
catalytic activity
node2->node5
node3
BFO:0000003
occurrent
node3->node1
node3->node3
node4
BFO:0000001
entity
node4->node3
node6
GO:0016829
lyase activity
node5->node6
node7
GO:0004325
ferrochelatase
activity
node6->node7