For the CoNLL04 dataset, we use two evaluation settings. We use the relaxed evaluation similar to <cite>Gupta et al. (2016)</cite> ; Adel and Schütze (2017) on the EC task. The baseline model outperforms the state-of-the-art models that do not rely on manually extracted features (>4% improvement for both tasks), since we directly model the whole sentence, instead of just considering pairs of entities.