@Test public void find4()
{ 

    TripleTable table = createTripleTableMem() ;
    add(table, n1, n2, n3) ;
    add(table, n4, n5, n6) ;
    match(table, Node.ANY, n2, n3) ;
    match(table, null, n2, n3) ;
    match(table, null, null, null) ;
}