test
node1
GO:0008152
metabolic process
node2
GO:0070988
demethylation
node1->node2
node3
GO:0008150
biological_process
node3->node1
node4
BFO:0000001
entity
node5
BFO:0000003
occurrent
node4->node5
node5->node5
node6
BFO:0000015
process
node5->node6
node6->node3