/usr/lib/python2.7/dist-packages/nltk/translate/ is in python-nltk 3.2.1-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/nltk/translate/__init__.py
/usr/lib/python2.7/dist-packages/nltk/translate/api.py
/usr/lib/python2.7/dist-packages/nltk/translate/bleu_score.py
/usr/lib/python2.7/dist-packages/nltk/translate/gale_church.py
/usr/lib/python2.7/dist-packages/nltk/translate/gdfa.py
/usr/lib/python2.7/dist-packages/nltk/translate/ibm1.py
/usr/lib/python2.7/dist-packages/nltk/translate/ibm2.py
/usr/lib/python2.7/dist-packages/nltk/translate/ibm3.py
/usr/lib/python2.7/dist-packages/nltk/translate/ibm4.py
/usr/lib/python2.7/dist-packages/nltk/translate/ibm5.py
/usr/lib/python2.7/dist-packages/nltk/translate/ibm_model.py
/usr/lib/python2.7/dist-packages/nltk/translate/metrics.py
/usr/lib/python2.7/dist-packages/nltk/translate/phrase_based.py
/usr/lib/python2.7/dist-packages/nltk/translate/ribes_score.py
/usr/lib/python2.7/dist-packages/nltk/translate/stack_decoder.py