test
node1
GO:0009987
cellular process
node2
GO:0044237
cellular metabolic
process
node1->node2
node5
GO:0043446
cellular alkane
metabolic process
node2->node5
node3
BFO:0000003
occurrent
node3->node3
node4
BFO:0000015
process
node3->node4
node8
GO:0008150
biological_process
node4->node8
node10
GO:0015947
methane metabolic
process
node5->node10
node6
GO:0071704
organic substance
metabolic process
node7
GO:0120252
hydrocarbon metabolic
process
node6->node7
node7->node5
node8->node1
node9
GO:0008152
metabolic process
node8->node9
node9->node2
node9->node6
node11
BFO:0000001
entity
node11->node3