A non-transitory computer readable storage medium storing a program for expanding annotated text data, the program, when executed by one or more processors, causing the one or more processors to perform an expansion of the annotated text data,
- wherein the program causes the one or more processors to:
- input the annotated text data including a first text appended with a first annotation label to a prediction complementary model;
- and
- create new annotated text data by the prediction complementary model, with reference to the first annotation label and context of the first text.