test
node1
BFO:0000003
occurrent
node1->node1
node4
BFO:0000015
process
node1->node4
node2
GO:0008150
biological_process
node3
GO:0032502
developmental process
node2->node3
node5
GO:0048856
anatomical structure
development
node3->node5
node4->node2
node6
GO:0009888
tissue development
node5->node6
node7
GO:0060537
muscle tissue
development
node6->node7
node8
GO:0014706
striated muscle
tissue development
node7->node8
node9
BFO:0000001
entity
node9->node1