 It also yields 1.5 -3.3 BLEU improvements in IWSLT English-French and English-German translation tasks.
<clarity>  It also yields 1.5 -3.3 BLEU improvements in IWSLT English-French and English-German translation tasks.
 It also yields 1.5 -3.3 BLEU improvements in IWSLT English-French and English-German tasks.