string: 3 Access to source code and limited GPU time prevent us from training and evaluating the embeddings from other NMT models such as that of Kalchbrenner and Blunsom (2013), Devlin et al. (2014) and Sutskever et al. (2014). The underlying principles of encoding–decoding also apply to these models, and we expect the embeddings would exhibit similar properties to those analysed here.