But they have difficulty remembering what happened there , perhaps because of drugs , and are unsure whether they were filmed for pornography , Rudolf Gajdos , head of the Slovak office of Interpol , told Reuters .
<response> But they have difficulty remembering what happened there , perhaps because of drugs , and are unsure whether they were filmed for pornography , <person>Rudolf Gajdos</person> , head of the <misc>Slovak</misc> office of <organization>Interpol</organization> , told <organization>Reuters</organization> . </response>