test
node1
BFO:0000001
entity
node2
BFO:0000002
continuant
node1->node2
node2->node2
node9
BFO:0000004
independent
continuant
node2->node9
node3
PO:0025025
root system
node4
PO:0009005
root
node3->node4
node7
PO:0000025
root tip
node4->node7
node18
PO:0025095
root parenchyma
node4->node18
node5
PO:0009008
plant organ
node19
PO:0025001
cardinal organ part
node5->node19
node6
PO:0025004
plant axis
node5->node6
node6->node4
node8
PO:0020123
root cap
node7->node8
node9->node9
node16
BFO:0000040
material entity
node9->node16
node10
PO:0025059
portion of ground
tissue
node11
PO:0005421
parenchyma
node10->node11
node11->node18
node12
PO:0009011
plant structure
node15
PO:0009007
portion of plant
tissue
node12->node15
node13
PO:0025496
multi-tissue plant
structure
node12->node13
node21
PO:0025497
collective plant
structure
node12->node21
node14
PO:0025498
cardinal part of
multi-tissue plant
structure
node12->node14
node13->node5
node13->node14
node14->node19
node15->node10
node17
PO:0025131
plant anatomical
entity
node16->node17
node17->node12
node18->node8
node19->node7
node20
PO:0025007
collective plant
organ structure
node20->node3
node21->node20