test
node1
GO:0005488
binding
node2
GO:0070025
carbon monoxide
binding
node1->node2
node3
GO:0070027
carbon monoxide
sensor activity
node2->node3
node4
GO:0003674
molecular_function
node4->node1
node7
GO:0140299
small molecule sensor
activity
node4->node7
node5
BFO:0000003
occurrent
node5->node5
node6
BFO:0000015
process
node5->node6
node6->node4
node7->node3
node8
BFO:0000001
entity
node8->node5