Although this model seems to be using story comprehension features such as event sequencing, since the endings are included in the sequences, the biases within the endings have influenced the predictions and the weak performance of the model in SCT-v1.5 suggest that this model had picked up on the biases of SCT-v1.0 as opposed to really understanding the context.
the posterior probabilities for each ending choice using their features are quite similar on the SCT-v1.5.