node source
node ask#1 "a" @6:30 actors=actor#1 type="string"
node ask#2 "b" @9:19 actors=actor#2 type="string"
node sink
actor actor#1 "a" @6:19
actor actor#2 "b" @9:8
edge source -> ask#1 data exact
edge ask#1 -> ask#2 data exact type="string"
edge ask#2 -> sink data exact type="string"
