The reason to not retrieving the answer may be related to the language. Discovery seems to be trained to recognize concepts without the need to phrase the question in a very specific way because it was trained to identify keywords, synonyms, etc. It may have not been trained for that for the language you are using. A solution to that may be to ask questions in different ways, then go in and train the Discovery yourself by marking the questions to the correct answer. This way Watson Discovery will be taught to make associations between related concepts.
For example, when you ask "What is XYZ" and it is not able to return an answer, go in and train Discovery to associate that question to the right answer that you get when you ask the exact subtitle "Definition of XWY". This way it may be able to learn to associate "What is" to "definition of" in your language.
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Antonel Neculai
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