test
node1
TO:0000357
plant growth and
development trait
node2
TO:0000933
plant phenological
trait
node1->node2
node3
TO:0002616
flowering time trait
node2->node3
node4
CO_336:0000000
soybean flowering
time trait
node3->node4
node5
TO:0000387
plant trait
node5->node1