test
node1
GO:0032501
multicellular
organismal process
node2
GO:0055046
microgametogenesis
node1->node2
node8
GO:0007275
multicellular
organism development
node1->node8
node5
GO:0022620
microgametophyte
vegetative cell
differentiation
node2->node5
node3
GO:0008150
biological_process
node3->node1
node4
GO:0009987
cellular process
node3->node4
node11
GO:0032502
developmental process
node3->node11
node6
GO:0048869
cellular
developmental process
node4->node6
node7
GO:0030154
cell differentiation
node6->node7
node7->node5
node9
GO:0048229
gametophyte
development
node8->node9
node12
GO:0009555
pollen development
node9->node12
node10
BFO:0000003
occurrent
node10->node10
node14
BFO:0000015
process
node10->node14
node11->node6
node15
GO:0048856
anatomical structure
development
node11->node15
node12->node2
node13
BFO:0000001
entity
node13->node10
node14->node3
node15->node8