Task: Question Answering
Input (English): We call the model as a modified Toulmin's model. It contains five argument components, namely claim, premise, backing, rebuttal, and refutation. When annotating a document, any arbitrary token span can be labeled with an argument component; the components do not overlap.  
 Question: What argument components do the ML methods aim to identify?
Output (English): claim, premise, backing, rebuttal, and refutation