We ran experiments for all different features groups and observe that with the exception of the P class, the F1 scores for all the other classes is comparable to the results reported by <cite>Stab and Gurevych (2014b)</cite> . One explanation of having lower performance on the P (premise) category is that the <cite>S&G</cite> dataset used for training has higher quality essays, while 2/3 of our T OEF L arg dataset consists of medium and low scoring essays (the writing style for providing reasons or example can differ between high and low scoring essays).