test
node1
GO:0008150
biological_process
node2
GO:0022414
reproductive process
node1->node2
node6
GO:0000003
reproduction
node1->node6
node7
GO:0009566
fertilization
node2->node7
node3
BFO:0000001
entity
node4
BFO:0000003
occurrent
node3->node4
node4->node4
node5
BFO:0000015
process
node4->node5
node5->node1
node6->node2
node8
GO:0019953
sexual reproduction
node6->node8
node8->node7