test
node1
BFO:0000040
material entity
node2
PO:0025131
plant anatomical
entity
node1->node2
node11
PO:0009011
plant structure
node2->node11
node3
PO:0020094
plant egg cell
node4
PO:0025122
archegonium egg cell
node3->node4
node5
BFO:0000001
entity
node6
BFO:0000002
continuant
node5->node6
node6->node6
node9
BFO:0000004
independent
continuant
node6->node9
node7
PO:0025606
native plant cell
node8
PO:0025006
plant gamete
node7->node8
node8->node3
node9->node9
node9->node1
node10
PO:0009002
plant cell
node10->node7
node11->node10