node source
node ask#1 "a1" @8:29 actors=actor#1 type="string"
node ask#2 "b1" @9:29 actors=actor#2 type="string"
node ask#3 "c1" @12:29 actors=actor#3 type="string"
node ask#4 "d1" @13:29 actors=actor#4 type="string"
node sink
actor actor#1 "a1" @8:17
actor actor#2 "b1" @9:17
actor actor#3 "c1" @12:17
actor actor#4 "d1" @13:17
edge source -> ask#1 data exact
edge source -> ask#2 data exact
edge ask#1 -> ask#3 data exact type="string"
edge ask#2 -> ask#4 data exact type="string"
edge ask#3 -> sink data exact type="string"
edge ask#4 -> sink data exact type="string"
