test
node1
TO:0000387
plant trait
node2
TO:0000392
sterility or
fertility trait
node1->node2
node3
TO:0000485
sterility related
trait
node2->node3
node4
TO:0000437
male sterility
node3->node4
node5
CO_334:0000404
cassava male sterile
trait
node4->node5