test
node1
BFO:0000003
occurrent
node1->node1
node2
BFO:0000015
process
node1->node2
node3
GO:0008150
biological_process
node2->node3
node7
GO:0032502
developmental process
node3->node7
node4
GO:0048856
anatomical structure
development
node5
GO:0048513
animal organ
development
node4->node5
node8
GO:0009888
tissue development
node4->node8
node6
GO:0060485
mesenchyme
development
node5->node6
node7->node4
node8->node6
node9
BFO:0000001
entity
node9->node1