domain.addFunction("F");
FOLParser parser = new FOLParser(domain);
List<Literal> lits = new ArrayList<Literal>();
AtomicSentence a1 = (AtomicSentence) parser.parse("P(F(x,B),x)");
AtomicSentence a2 = (AtomicSentence) parser.parse("Q(x)");
lits.add(new Literal(a1));
lits.add(new Literal(a2));
Clause c1 = new Clause(lits);