test
node1
TO:0000277
biochemical trait
node2
TO:0000465
mineral and ion
content trait
node1->node2
node3
TO:0000609
potassium content
node2->node3
node4
CO_321:0500036
wheat grain potassium
content trait
node3->node4
node5
BFO:0000001
entity
node6
BFO:0000002
continuant
node5->node6
node6->node6
node7
BFO:0000020
specifically
dependent continuant
node6->node7
node11
BFO:0000019
quality
node7->node11
node7->node7
node8
PATO:0000001
quality
node7->node8
node12
PATO:0001241
physical object
quality
node8->node12
node9
PATO:0000141
structure
node10
PATO:0000025
composition
node9->node10
node10->node3
node11->node11
node13
PATO:0000051
morphology
node11->node13
node11->node12
node12->node13
node13->node9
node14
TO:0000387
plant trait
node14->node1