private TupleResult createQueryResult() {
List<String> bindingNames = Arrays.asList("a", "b", "c");
MapBindingSet solution1 = new MapBindingSet(bindingNames.size());
solution1.addBinding("a", new URIImpl("foo:bar"));
solution1.addBinding("b", new BNodeImpl("bnode"));
solution1.addBinding("c", new LiteralImpl("baz"));
MapBindingSet solution2 = new MapBindingSet(bindingNames.size());
solution2.addBinding("a", new LiteralImpl("1", XMLSchema.INTEGER));