linguistic:paraphrasing, linguistic:translation, linguistic:voice_change, quality:corruption
Expansion of Fourfold model: Semi-Excludable

The additional definition matrix shows the four common categories alongside providing some examples of fully excludable goods, Semi-excludable goods and fully non-excludeable goods. Semi-excludable goods can be considered goods or services that a mostly successful in excluding non-paying customer, but are still able to be consumed by non-paying consumers. An example of this is movies, books or video games that could be easily pirated and shared for free.