Watson Knowledge Studio uses machine learning to create domain-specific custom models, based on examples provided by the user. Users will select sample documents for their domain and define entity types and relationships among them. For example, a user might create entity types for "CarModel" and "Year," and a "MadeIn" relationship to connect them. To train Watson with WKS, you just have to annotate documents for it. With enough examples, your custom model will be able to analyze previously unseen text in the same way. \r