On the index detail page, expand the document information to get the film number, then search the catalog for that film.

https://www.familysearch.org/search/catalog/results?count=20&query=%2Bfilm_number%3A4405928

This tells you that the film contains Roman Catholic registers from Peticse and Greek Catholic registers from Márk-Csemernye, both in Zemplén county. If other information about the person is not sufficient to tell which of these applies, you can use the image number (also found under document information) to estimate it: the catalog indicates that items 1 to 4 are the RC records, and only item 5 is GC. Also, you can plug the film number into the film-viewer URL (https://www.familysearch.org/search/film/004405928) to get the information that the full film is 529 images, meaning that image 252 is not quite halfway and therefore pretty much has to be from the Peticse RC registers.

Another thing you can try is to ask the Family History Library's Lookup Service (https://www.familysearch.org/en/library/record-lookup-service) for the image. You'll be at the mercy of the assigned volunteer's understanding or interpretation of the rules, but the supervisors generally know that a death register from nearly 120 years ago is not restricted; it's just a victim of FS's all-or-nothing approach to privacy law enforcement.