Second, as compared to the negative experiences with annotating using Walton's schemes (see Sections 4.4.1 and 3.1), our modified Toulmin model offers a trade-off between its expressiveness and annotation reliability.
we found that the capabilities of the model to capture argumentation depend on the register and topic, the length of the document, and inherently on the literary devices and structures used for expressing argumentation as these properties influence the agreement among annotators.