node source
node ask#1 "alpha" @3:32 actors=actor#1 type="string"
node ask#2 "beta" @5:29 actors=actor#2 type="string"
node sink
actor actor#1 "alpha" @3:17
actor actor#2 "beta" @5:15
edge source -> ask#1 data exact
edge ask#1 -> ask#2 data exact type="string"
edge ask#2 -> sink data exact type="string"
