test
node1
GO:0007507
heart development
node2
GO:0003170
heart valve
development
node1->node2
node13
GO:0003179
heart valve
morphogenesis
node2->node13
node3
GO:0032501
multicellular
organismal process
node4
GO:0007275
multicellular
organism development
node3->node4
node12
GO:0048731
system development
node4->node12
node5
GO:0008150
biological_process
node5->node3
node6
GO:0032502
developmental process
node5->node6
node8
GO:0048856
anatomical structure
development
node6->node8
node9
GO:0009653
anatomical structure
morphogenesis
node6->node9
node7
GO:0048513
animal organ
development
node7->node1
node8->node2
node8->node4
node8->node7
node8->node9
node8->node12
node9->node13
node10
BFO:0000015
process
node10->node5
node11
GO:0072359
circulatory system
development
node11->node1
node12->node11
node14
BFO:0000003
occurrent
node14->node10
node15
BFO:0000001
entity
node15->node14