test
node1
GO:0007155
cell adhesion
node2
GO:0098609
cell-cell adhesion
node1->node2
node7
GO:0098610
adhesion between
unicellular organisms
node2->node7
node3
GO:0009987
cellular process
node3->node1
node4
BFO:0000015
process
node5
GO:0008150
biological_process
node4->node5
node5->node3
node6
BFO:0000003
occurrent
node6->node4
node8
BFO:0000001
entity
node8->node6