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