test
node1
GO:0043588
skin development
node2
GO:0043589
skin morphogenesis
node1->node2
node3
GO:0009653
anatomical structure
morphogenesis
node4
GO:0009887
animal organ
morphogenesis
node3->node4
node4->node2
node5
GO:0048513
animal organ
development
node5->node1
node5->node4
node6
GO:0008150
biological_process
node7
GO:0032502
developmental process
node6->node7
node7->node3
node8
GO:0048856
anatomical structure
development
node7->node8
node8->node3
node8->node5
node9
BFO:0000015
process
node9->node6
node10
BFO:0000003
occurrent
node10->node9
node11
BFO:0000001
entity
node11->node10