Matthias Sperber author Graham Neubig author Jan Niehues author Sebastian Stüker author Alex Waibel author 2016-12 text Yuji Matsumoto editor Rashmi Prasad editor The COLING 2016 Organizing Committee Osaka, Japan conference publication sperber-etal-2016-lightly https://aclanthology.org/C16-1292/ 2016-12 3103 3113