test
node1
GO:0008150
biological_process
node2
GO:0002376
immune system process
node1->node2
node6
GO:0019882
antigen processing
and presentation
node2->node6
node3
BFO:0000003
occurrent
node3->node3
node4
BFO:0000015
process
node3->node4
node4->node1
node5
BFO:0000001
entity
node5->node3
node7
GO:0002468
dendritic cell
antigen processing
and presentation
node6->node7