test
node1
GO:0043227
membrane-bounded
organelle
node2
GO:0031090
organelle membrane
node1->node2
node3
GO:0110165
cellular anatomical
entity
node4
GO:0016020
membrane
node3->node4
node5
GO:0043226
organelle
node3->node5
node4->node2
node5->node1
node6
GO:0005575
cellular_component
node6->node3