private String[] getJsonQueries() throws QueryNodeException {
final QueryBuilder b = new QueryBuilder();
final String[] queries = {
b.newNode("\"Marie Antoinette\"").toString(),
b.newTwig("genre").with(b.newNode("Drama")).toString(),
b.newBoolean().with(b.newTwig("genre").with(b.newNode("Drama")))
.with(b.newTwig("year").with(b.newNode("2010"))).toString(),
b.newTwig("director").with(
// here, twig with empty root node to represent first nested entity node
b.newTwig().with(b.newTwig("last_name").with(b.newNode("Eastwood")))
.with(b.newTwig("first_name").with(b.newNode("Clint")))