Task: Question Answering
Input (English): As the baseline model (BASE-4L) for IWSLT14 German-English and Turkish-English, we use a 4-layer encoder, 4-layer decoder, residual-connected model, with embedding and hidden size set as 256 by default. 
 Question: what are the baselines?
Output (English):  4-layer encoder, 4-layer decoder, residual-connected model, with embedding and hidden size set as 256