@prefix log: <http://www.w3.org/2000/10/swap/log#>.
@prefix string: <http://www.w3.org/2000/10/swap/string#>.
@prefix : <#>.

{ ("%s-%d" "test" 1) string:format ?x} => {"test-1" a :success}.

{ ("%s-%d" "test" 2) string:format "test-3"} => {"test-2" a :FAILURE}.
