I have a: fresh installation of Linux mint 20 cinnamon a week ago (luv it)
and i have 3d ays ago installed okular for pdfs.
My Problem: when i want to open a file, that is unknown to the system with open with...
then i get the weird behavior of many okular's to choose from. Please see picture below: 
I installed okular from the standard 'Software Manager' it is version 4:19.12.3-2ubuntu1. Found out it is a KDE Graphic Module. And I looked up odd behavior of open with...
My question: How can I only show one okular in the choose Program tray of open with... ?
I want:
Okular to appear only once in the "Open with..."- list.
I think the okular options are getting more (kind of funny).
Thanks in advance
/usr/share/applications. Inspecting those files, they each appear to handle a different MIME type, so it's unclear why okular is appearing lots of times. But after moving all of these files out of that directory, leaving onlyokularApplication_pdf.desktopI can confirm okular now only appears once in the 'Open With' list (oddly, it doesn't seem to matter that I'm not even trying to open a PDF).