test
node1
BFO:0000003
occurrent
node1->node1
node18
BFO:0000015
process
node1->node18
node2
GO:0048568
embryonic organ
development
node3
GO:0035050
embryonic heart tube
development
node2->node3
node4
GO:0048513
animal organ
development
node4->node2
node16
GO:0007507
heart development
node4->node16
node5
GO:0007275
multicellular
organism development
node6
GO:0035295
tube development
node5->node6
node9
GO:0009790
embryo development
node5->node9
node13
GO:0048731
system development
node5->node13
node6->node3
node7
GO:0009888
tissue development
node8
GO:0060429
epithelium
development
node7->node8
node8->node3
node9->node2
node10
BFO:0000001
entity
node10->node1
node11
GO:0032501
multicellular
organismal process
node11->node5
node12
GO:0048856
anatomical structure
development
node12->node4
node12->node5
node12->node6
node12->node7
node12->node13
node17
GO:0072359
circulatory system
development
node13->node17
node14
GO:0008150
biological_process
node14->node11
node15
GO:0032502
developmental process
node14->node15
node15->node12
node16->node3
node17->node16
node18->node14