• When in a multi step reaction a reactant or product from a different reaction step was used as a reactant or product in a given reaction step. It was interesting to see that sometimes the depicted reactions input was wrong -as per an error of the chemist drawing the reaction arrow in the wrong direction -but the RSMI extraction of this incorrect content was still formally correct. For example, in image US-08680111-B2_765 (Fig. ) -the direction of the reaction in the image is wrong. Also, the last reaction in this patent image is erroneous but the extracted reaction is correct and was therefore given a score of 1.