test
node1
BFO:0000002
continuant
node1->node1
node2
BFO:0000020
specifically
dependent continuant
node1->node2
node2->node2
node7
PATO:0000001
quality
node2->node7
node3
PATO:0001236
process quality
node4
TO:0000283
biological process
trait
node3->node4
node5
TO:0001015
photosynthetic rate
node4->node5
node6
BFO:0000001
entity
node6->node1
node7->node3
node8
TO:0000387
plant trait
node8->node4