node source
node ask#1 "scan" @2:34 actors=actor#1 type="string[]"
node ask#2 "act" @10:21 actors=actor#2 type="string"
node sink
actor actor#1 "scan" @2:20
actor actor#2 "act" @10:8
edge source -> ask#1 data exact
edge ask#1 -> ask#2 data exact type="string[]"
edge ask#2 -> sink data exact type="string"
