test
node1
GO:0019953
sexual reproduction
node2
GO:0000748
conjugation with
mutual genetic
exchange
node1->node2
node3
BFO:0000003
occurrent
node3->node3
node6
BFO:0000015
process
node3->node6
node4
GO:0008150
biological_process
node5
GO:0000003
reproduction
node4->node5
node5->node1
node6->node4
node7
BFO:0000001
entity
node7->node3