Dataset mention extraction is a difficult problem due to the unstructured nature of text. the sparsity of dataset mentions. and the various ways the same dataset can be mentioned. Extracting unknown dataset mentions which are not part of the training data of the model is even harder. https://www.roneverhart.com/Traditional-Karate-Do-Okinawa-Goju-Ryu-Book-1-The-Fundamental-Techniques-by-Morio-Higaonna-Preowned/