test
node1
GO:0005575
cellular_component
node2
GO:0110165
cellular anatomical
entity
node1->node2
node3
GO:0030054
cell junction
node2->node3
node5
GO:0098793
presynapse
node2->node5
node6
GO:0098833
presynaptic endocytic
zone
node2->node6
node4
GO:0045202
synapse
node3->node4
node4->node5
node5->node6