test
node1
BFO:0000001
entity
node2
BFO:0000002
continuant
node1->node2
node2->node2
node5
BFO:0000004
independent
continuant
node2->node5
node3
PO:0009002
plant cell
node4
PO:0025606
native plant cell
node3->node4
node7
PO:0006204
sporocyte
node4->node7
node5->node5
node10
BFO:0000040
material entity
node5->node10
node6
PO:0025094
sporangium
node6->node7
node14
PO:0025201
megasporangium
node6->node14
node13
PO:0000431
megasporocyte
node7->node13
node8
PO:0009011
plant structure
node8->node3
node9
PO:0025496
multi-tissue plant
structure
node8->node9
node12
PO:0009008
plant organ
node9->node12
node11
PO:0025131
plant anatomical
entity
node10->node11
node11->node8
node12->node6
node14->node13