[Gentoo][python]UserWarning: nltk.sem.relextract and nltk.sem.chat80 modules not loaded (please install sqlite3 library

peicheng@PCsNB ~/project/python/book $ python linkedin__analyze_companies.py

/usr/lib/python2.7/site-packages/nltk-2.0b5-py2.6.egg/nltk/sem/__init__.py:24: UserWarning: nltk.sem.relextract and nltk.sem.chat80 modules not loaded (please install sqlite3 library

USE="tcl" emerge sqlite