Starting on goal: Prolog$Goal(car=l("[]", "say", Prolog$Var(id=0L, instance=r3)))
Goal arity 2: "[]"(say, $x)
nextSolution
  Goal: "[]"(say, $x). Got clause: "[]"(say, "[]"(_1, is, tasty, "!")) :- "[]"(user, says, "[]"(what, is, tasty)); "[]"(_1, is, tasty)
  Clause unifies to: "[]"(say, "[]"(_1, is, tasty, "!")) :- "[]"(user, says, "[]"(what, is, tasty)); "[]"(_1, is, tasty)
  gdash: "[]"(user, says, "[]"(what, is, tasty)); "[]"(_1, is, tasty)
Goal arity 3: "[]"(user, says, "[]"(what, is, tasty))
New goal: "[]"(user, says, "[]"(what, is, tasty)); "[]"(_1, is, tasty)
   Goal: "[]"(user, says, "[]"(what, is, tasty)); "[]"(_1, is, tasty). Got clause: "[]"(user, says, "[]"(what, is, tasty))
   Clause unifies to: "[]"(user, says, "[]"(what, is, tasty))
   gdash: "[]"(_1, is, tasty)
Goal arity 3: "[]"(_1, is, tasty)
 New goal: "[]"(_1, is, tasty)
    Goal: "[]"(_1, is, tasty). Got clause: "[]"(lasagna, is, tasty)
    Clause unifies to: "[]"(lasagna, is, tasty)
    gdash: null
SUCCESS!
  solution found in step 8