node source
node ask#1 "writer" @16:29 actors=actor#1 type="string"
node ask#2 "reader" @17:24 actors=actor#2 type="string"
node sink
actor actor#1 "writer" @16:13
actor actor#2 "reader" @17:8
edge source -> ask#1 data exact
edge ask#1 -> ask#2 data inexact type="string"
edge ask#2 -> sink data exact type="string"
