$ sudo apt-get update
$ sudo apt-get install fillets-ng-data-nl 

fillets-ng-data-nl is installed in your system.

Make ensure the fillets-ng-data-nl package were installed using the commands given below,

$ sudo dpkg-query -l | grep fillets-ng-data-nl *

You will get with fillets-ng-data-nl package name, version, architecture and description in a table

fillets-ng-data-nl package basic information: