function evaluate(EqualityExpression != RelationalExpression) {
var lref = evaluate(EqualityExpression);
var lval = GetValue(lref);
var rref = evaluate(RelationalExpression);
var rval = GetValue(rref);
var r = EqualityComparison(lval,rval); // 11.9.3
if (r) return false;
return true;
}