test
node1
TO:0020096
mineral and ion
transport trait
node2
TO:0000514
potassium uptake
node1->node2
node3
PATO:0000001
quality
node4
PATO:0001236
process quality
node3->node4
node8
TO:0000283
biological process
trait
node4->node8
node5
BFO:0000002
continuant
node5->node5
node6
BFO:0000020
specifically
dependent continuant
node5->node6
node6->node6
node6->node3
node7
BFO:0000001
entity
node7->node5
node8->node1
node9
TO:0000387
plant trait
node9->node8