public void TestRemoveByPredicateObjectDoesNotRemoveLiteralMatches()
{
var c = new TripleCollection();
c.AddRange(new[] { T2, T3 });
c.RemoveByPredicateObject("http://example.org/p", "http://example.org/o");
Assert.AreEqual(1, c.Count());
Assert.IsTrue(c.Items.Any(x => x.Equals(T3)));
}