test
node1
GO:0032502
developmental process
node2
GO:0048869
cellular
developmental process
node1->node2
node7
GO:0030154
cell differentiation
node2->node7
node3
BFO:0000003
occurrent
node3->node3
node4
BFO:0000015
process
node3->node4
node5
GO:0008150
biological_process
node4->node5
node5->node1
node6
GO:0009987
cellular process
node5->node6
node6->node2
node9
GO:1904238
pericyte cell
differentiation
node7->node9
node8
BFO:0000001
entity
node8->node3