$ sudo apt-get update
$ sudo apt-get install libexttextcat-data 

libexttextcat-data is installed in your system.

Make ensure the libexttextcat-data package were installed using the commands given below,

$ sudo dpkg-query -l | grep libexttextcat-data *

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

libexttextcat-data package basic information: