The native language of an author. You can use this augmentation to filter for content from authors based on their first language.
- Filter for Tweets from authors who indicate that English is not their first language:
demographic.first_language != "English"
This data is mined from publicly available sources so there is no definitive list of values. Here, for your guidance, are some of the most popular values that you can filter against at the time of writing:
Target service: Augmentation Target: Demographic
Always exists: No