test
node1
BFO:0000015
process
node2
GO:0008150
biological_process
node1->node2
node3
GO:0032502
developmental process
node2->node3
node9
GO:0043473
pigmentation
node2->node9
node10
GO:0009987
cellular process
node2->node10
node4
GO:0048869
cellular
developmental process
node3->node4
node5
GO:0030154
cell differentiation
node4->node5
node7
GO:0050931
pigment cell
differentiation
node5->node7
node6
GO:0048066
developmental
pigmentation
node6->node7
node8
BFO:0000003
occurrent
node8->node1
node8->node8
node9->node6
node10->node4
node11
BFO:0000001
entity
node11->node8