boxer-data software package provides classes and nodes usable by Boxer, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install boxer-data
boxer-data is installed in your system.
Make ensure the boxer-data package were installed using the commands given below,
$ sudo dpkg-query -l | grep boxer-data *
You will get with boxer-data package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Miscellaneous |
| Package | boxer-data |
| Version | 10.4.0 |
| Description | classes and nodes usable by Boxer |
| Sub Section | Misc |