    @Test
    public void acceptsOrdinaryTriples() throws IOException,
    InterruptedException {

        String ordinaryTriple = "ns:aviation.aircraft.first_flight\tns:type.property.unique\ttrue.";
        mapper.map(new LongWritable(1L), new Text(ordinaryTriple), context);
        verify(context).getCounter(FreebasePrefilterCounter.ACCEPTED);
        verify(context)
        .write(new Text(
                "<http://rdf.basekb.com/ns/aviation.aircraft.first_flight>"),
                new Text(
                        "<http://rdf.basekb.com/ns/type.property.unique>\ttrue."));
        verifyNoMoreInteractions(context);
    }