sentence1: and their best model achieves coverage of 90 . 56 % and a bleu score of 0 . 7723 on penn-ii wsj section 23 sentences of length ≤20 .
sentence2: we currently achieve coverage of 95.26 % , a bleu score of 0.7227 and string accuracy of 0.7476 on the penn-ii wsj section 23 sentences of length ≤20 .