test
node1
PO:0009007
portion of plant
tissue
node2
PO:0009013
portion of meristem
tissue
node1->node2
node3
PO:0006079
shoot system meristem
node2->node3
node7
PO:0020144
apical meristem
node2->node7
node4
PO:0020148
shoot apical meristem
node3->node4
node13
PO:0008028
reproductive shoot
apical meristem
node4->node13
node5
BFO:0000001
entity
node6
BFO:0000002
continuant
node5->node6
node6->node6
node12
BFO:0000004
independent
continuant
node6->node12
node7->node4
node8
PO:0000037
shoot axis apex
node8->node4
node9
PO:0025222
reproductive shoot
apex
node8->node9
node9->node13
node10
PO:0009008
plant organ
node11
PO:0025004
plant axis
node10->node11
node14
PO:0025029
shoot axis
node11->node14
node12->node12
node17
BFO:0000040
material entity
node12->node17
node14->node8
node15
PO:0009011
plant structure
node15->node1
node16
PO:0025496
multi-tissue plant
structure
node15->node16
node20
PO:0025497
collective plant
structure
node15->node20
node16->node10
node18
PO:0025131
plant anatomical
entity
node17->node18
node18->node15
node19
PO:0009006
shoot system
node19->node3
node19->node14
node21
PO:0025007
collective plant
organ structure
node20->node21
node21->node19