test
node1
GO:0032501
multicellular
organismal process
node2
GO:0007610
behavior
node1->node2
node3
GO:0007631
feeding behavior
node2->node3
node4
GO:0001967
suckling behavior
node3->node4
node5
BFO:0000015
process
node6
GO:0008150
biological_process
node5->node6
node6->node1
node7
BFO:0000001
entity
node8
BFO:0000003
occurrent
node7->node8
node8->node5
node8->node8