test
node1
GO:0032502
developmental process
node2
GO:0048856
anatomical structure
development
node1->node2
node5
GO:0048513
animal organ
development
node2->node5
node3
BFO:0000001
entity
node4
BFO:0000003
occurrent
node3->node4
node4->node4
node8
BFO:0000015
process
node4->node8
node6
GO:0048732
gland development
node5->node6
node7
GO:0030879
mammary gland
development
node6->node7
node9
GO:0008150
biological_process
node8->node9
node9->node1