test
node1
BFO:0000003
occurrent
node1->node1
node2
BFO:0000015
process
node1->node2
node5
GO:0008150
biological_process
node2->node5
node3
GO:0030879
mammary gland
development
node4
GO:0002174
mammary stem cell
proliferation
node3->node4
node9
GO:0032502
developmental process
node5->node9
node12
GO:0009987
cellular process
node5->node12
node6
BFO:0000001
entity
node6->node1
node7
GO:0008283
cell population
proliferation
node7->node4
node8
GO:0048732
gland development
node8->node3
node10
GO:0048856
anatomical structure
development
node9->node10
node11
GO:0048513
animal organ
development
node10->node11
node11->node8
node12->node7