node source
node ask#1 "a" @5:31 actors=actor#1 type="string"
node ask#2 "b" @9:23 actors=actor#2 type="string"
node sink
actor actor#1 "a" @5:20
actor actor#2 "b" @9:12
edge source -> ask#1 data exact
edge ask#1 -> ask#2 data exact type="string"
edge ask#2 -> sink data exact type="string"
