node source
node ask#1 "a" @9:22 actors=actor#1 type="string"
node ask#2 "ask" @10:45 actors=actor#1,actor#2 type="string"
node ask#3 "ask" @11:44 actors=actor#2,actor#3 type="string"
node sink
actor actor#1 "alpha" @6:11
actor actor#2 "beta" @7:11
actor actor#3 "gamma" @8:11
edge source -> ask#1 data exact
edge ask#1 -> ask#2 context inexact
edge ask#1 -> ask#2 data exact type="string"
edge ask#2 -> ask#3 context inexact
edge ask#2 -> ask#3 data exact type="string"
edge ask#3 -> sink data exact type="string"
