// case 5
selector1 = new ScoredPrefixSelector<Element>("ibm", "global", "business", "services");
selector2 = new ScoredPrefixSelector<Element>("ibm", "business", "global", "services");
ctx.clear();
selector1.select(elem, ctx);
score1 = ctx.getScore();
ctx.clear();
selector2.select(elem, ctx);