test
node1
BFO:0000001
entity
node2
BFO:0000002
continuant
node1->node2
node2->node2
node3
BFO:0000020
specifically
dependent continuant
node2->node3
node9
BFO:0000019
quality
node3->node9
node3->node3
node4
PATO:0000001
quality
node3->node4
node10
PATO:0001241
physical object
quality
node4->node10
node5
PATO:0000141
structure
node6
PATO:0000025
composition
node5->node6
node12
TO:0000493
leaf composition
trait
node6->node12
node7
TO:0000017
plant morphology
trait
node8
TO:0000839
plant structure
morphology trait
node7->node8
node11
TO:0000836
multi-tissue plant
structure morphology
trait
node8->node11
node9->node9
node16
PATO:0000051
morphology
node9->node16
node9->node10
node10->node16
node10->node7
node14
TO:0000736
plant organ
morphology trait
node11->node14
node13
TO:0000543
leaf nitrogen content
node12->node13
node15
TO:0000747
phyllome morphology
trait
node14->node15
node18
TO:0000748
leaf morphology trait
node15->node18
node16->node5
node17
TO:0000387
plant trait
node17->node7
node18->node12