test
node1
GO:0008152
metabolic process
node3
GO:0009056
catabolic process
node1->node3
node2
GO:0044237
cellular metabolic
process
node1->node2
node4
GO:0044248
cellular catabolic
process
node2->node4
node3->node4
node5
BFO:0000003
occurrent
node5->node5
node7
BFO:0000015
process
node5->node7
node6
GO:0009987
cellular process
node6->node2
node8
GO:0008150
biological_process
node7->node8
node8->node1
node8->node6
node9
BFO:0000001
entity
node9->node5