test
node1
RO:0002310
exposure event or
process
node2
PECO:0007519
5-bromouridine
exposure
node1->node2
node3
PECO:0007359
plant experimental
condition
node4
PECO:0001001
plant exposure
node3->node4
node5
PECO:0007191
abiotic plant
exposure
node4->node5
node8
PECO:0007189
chemical exposure
node5->node8
node6
BFO:0000003
occurrent
node6->node6
node9
BFO:0000015
process
node6->node9
node7
PECO:0007149
chemical mutagen
exposure
node7->node2
node8->node7
node9->node1
node10
BFO:0000001
entity
node10->node6