test
node1
BFO:0000003
occurrent
node1->node1
node2
BFO:0000015
process
node1->node2
node18
GO:0008150
biological_process
node2->node18
node3
GO:0009653
anatomical structure
morphogenesis
node4
GO:0009887
animal organ
morphogenesis
node3->node4
node12
GO:0035239
tube morphogenesis
node3->node12
node13
GO:0060434
bronchus
morphogenesis
node4->node13
node5
GO:0032501
multicellular
organismal process
node6
GO:0007275
multicellular
organism development
node5->node6
node14
GO:0035295
tube development
node6->node14
node16
GO:0048731
system development
node6->node16
node7
GO:0032502
developmental process
node7->node3
node8
GO:0048856
anatomical structure
development
node7->node8
node8->node3
node8->node6
node9
GO:0048513
animal organ
development
node8->node9
node8->node14
node8->node16
node9->node4
node15
GO:0030323
respiratory tube
development
node9->node15
node10
GO:0060541
respiratory system
development
node11
GO:0060433
bronchus development
node10->node11
node11->node13
node12->node13
node14->node12
node14->node15
node15->node11
node16->node10
node17
BFO:0000001
entity
node17->node1
node18->node5
node18->node7