import "StandardLibrary"
import "Minigraph"

main = withGraph do
    r = map resource ["r0", "r1"]
    sort $ map uriOf $ select ?x where 
        Statement ?y (r!0) ?x
        Statement ?x (r!1) ?y
--
6:24-8:30: Failed to compile the query.
Unsolved variables: ?x, ?y