}
if (negativeSymbols.contains(toRemove)) {
negativeSymbols.remove(toRemove);
}
Collections.sort(positiveSymbols, new SymbolComparator());
Collections.sort(negativeSymbols, new SymbolComparator());
List<Sentence> sentences = new ArrayList<Sentence>();
for (int i = 0; i < positiveSymbols.size(); i++) {
sentences.add(positiveSymbols.get(i));
}