Perhaps the example be made less abstract by using mnemonic file names and property names instead of the abstract "File" and "File name".
Also literals, if any, could be visually distinguished.
I'm having trouble understand which of the strings are labels and which are references. Moreover I'm always uncertain whether my test isn't working because I made a mistake or due to the Arabic environment being incompatible with some functionality.
For example the corresponding documentation at semantic-mediawiki.org uses names that are slightly different, for example it has "[[File::File:{{{File|}}}]]" instead of "[[File::File:{{{File name|}}}]]"