public void Remove_retracts_by_subject_predicate_and_argument_object()
        {
            var expected = new Graph();

            expected.LoadFromString(@"
<urn:s> <urn:s> <urn:s> .
<urn:s> <urn:s> <urn:p> .
<urn:s> <urn:s> <urn:o> .
<urn:s> <urn:p> <urn:s> .
<urn:s> <urn:p> <urn:p> .
# <urn:s> <urn:p> <urn:o> .
<urn:s> <urn:o> <urn:s> .
<urn:s> <urn:o> <urn:p> .
<urn:s> <urn:o> <urn:o> .
<urn:p> <urn:s> <urn:s> .
<urn:p> <urn:s> <urn:p> .
<urn:p> <urn:s> <urn:o> .
<urn:p> <urn:p> <urn:s> .
<urn:p> <urn:p> <urn:p> .
<urn:p> <urn:p> <urn:o> .
<urn:p> <urn:o> <urn:s> .
<urn:p> <urn:o> <urn:p> .
<urn:p> <urn:o> <urn:o> .
<urn:o> <urn:s> <urn:s> .
<urn:o> <urn:s> <urn:p> .
<urn:o> <urn:s> <urn:o> .
<urn:o> <urn:p> <urn:s> .
<urn:o> <urn:p> <urn:p> .
<urn:o> <urn:p> <urn:o> .
<urn:o> <urn:o> <urn:s> .
<urn:o> <urn:o> <urn:p> .
<urn:o> <urn:o> <urn:o> .
");

            var g = new Graph();

            g.LoadFromString(@"
<urn:s> <urn:s> <urn:s> .
<urn:s> <urn:s> <urn:p> .
<urn:s> <urn:s> <urn:o> .
<urn:s> <urn:p> <urn:s> .
<urn:s> <urn:p> <urn:p> .
<urn:s> <urn:p> <urn:o> . # should retract
<urn:s> <urn:o> <urn:s> .
<urn:s> <urn:o> <urn:p> .
<urn:s> <urn:o> <urn:o> .
<urn:p> <urn:s> <urn:s> .
<urn:p> <urn:s> <urn:p> .
<urn:p> <urn:s> <urn:o> .
<urn:p> <urn:p> <urn:s> .
<urn:p> <urn:p> <urn:p> .
<urn:p> <urn:p> <urn:o> .
<urn:p> <urn:o> <urn:s> .
<urn:p> <urn:o> <urn:p> .
<urn:p> <urn:o> <urn:o> .
<urn:o> <urn:s> <urn:s> .
<urn:o> <urn:s> <urn:p> .
<urn:o> <urn:s> <urn:o> .
<urn:o> <urn:p> <urn:s> .
<urn:o> <urn:p> <urn:p> .
<urn:o> <urn:p> <urn:o> .
<urn:o> <urn:o> <urn:s> .
<urn:o> <urn:o> <urn:p> .
<urn:o> <urn:o> <urn:o> .
");

            var s = g.CreateUriNode(UriFactory.Create("urn:s"));
            var p = g.CreateUriNode(UriFactory.Create("urn:p"));
            var o = g.CreateUriNode(UriFactory.Create("urn:o"));
            var d = new DynamicNode(s);
            var c = new DynamicObjectCollection(d, p);

            c.Remove(o);

            Assert.Equal(
                expected,
                g);
        }