test
node1
GO:0051234
establishment of
localization
node2
GO:0006810
transport
node1->node2
node3
GO:0015669
gas transport
node2->node3
node4
GO:0015671
oxygen transport
node3->node4
node10
GO:0005344
oxygen carrier
activity
node4->node10
node5
BFO:0000015
process
node6
GO:0003674
molecular_function
node5->node6
node7
GO:0008150
biological_process
node5->node7
node12
GO:0140104
molecular carrier
activity
node6->node12
node9
GO:0051179
localization
node7->node9
node8
BFO:0000003
occurrent
node8->node5
node8->node8
node9->node1
node11
BFO:0000001
entity
node11->node8
node12->node10