test
node1
BFO:0000003
occurrent
node1->node1
node7
BFO:0000015
process
node1->node7
node2
GO:0000003
reproduction
node3
GO:0019953
sexual reproduction
node2->node3
node5
GO:0022414
reproductive process
node2->node5
node6
GO:0009566
fertilization
node3->node6
node4
GO:0008150
biological_process
node4->node2
node4->node5
node5->node6
node8
GO:0009567
double fertilization
forming a zygote and
endosperm
node6->node8
node7->node4
node9
BFO:0000001
entity
node9->node1