To install the verbalizer Plugin, follow these few steps. Depending on your system and your Protege installation (Protege 5 is recommended) the procedure may vary.
Download archive from this link, open a terminal and navigate to your download folder. In this terminal, enter
to extract the archive. Now change into the newly created folder (most likely by typing cd verbalizerplugin) and type:
This will copy the jar file to the plugin folder of your Protege installation. (by default your protege diractory is $HOME/Protege<Version>).