test
node1
GO:0060322
head development
node2
GO:0007420
brain development
node1->node2
node15
GO:0030901
midbrain development
node2->node15
node3
GO:0048856
anatomical structure
development
node3->node1
node4
GO:0007275
multicellular
organism development
node3->node4
node7
GO:0048731
system development
node3->node7
node12
GO:0048513
animal organ
development
node3->node12
node3->node15
node4->node7
node5
GO:0008150
biological_process
node6
GO:0032502
developmental process
node5->node6
node10
GO:0032501
multicellular
organismal process
node5->node10
node6->node3
node11
GO:0007417
central nervous
system development
node7->node11
node13
GO:0007399
nervous system
development
node7->node13
node8
BFO:0000003
occurrent
node8->node8
node9
BFO:0000015
process
node8->node9
node9->node5
node10->node4
node11->node2
node12->node2
node13->node11
node14
BFO:0000001
entity
node14->node8