test
node1
BFO:0000001
entity
node2
BFO:0000003
occurrent
node1->node2
node2->node2
node3
BFO:0000015
process
node2->node3
node12
GO:0008150
biological_process
node3->node12
node4
GO:0055080
monoatomic cation
homeostasis
node5
GO:0030003
intracellular
monoatomic cation
homeostasis
node4->node5
node14
GO:0055074
calcium ion
homeostasis
node4->node14
node10
GO:0006874
intracellular calcium
ion homeostasis
node5->node10
node6
GO:0050801
monoatomic ion
homeostasis
node6->node4
node7
GO:0006873
intracellular
monoatomic ion
homeostasis
node6->node7
node7->node5
node8
GO:0042592
homeostatic process
node9
GO:0048878
chemical homeostasis
node8->node9
node15
GO:0019725
cellular homeostasis
node8->node15
node9->node6
node11
GO:0055082
intracellular
chemical homeostasis
node9->node11
node13
GO:0098771
inorganic ion
homeostasis
node9->node13
node11->node7
node12->node8
node13->node14
node14->node10
node15->node11