def _annotate_second_pass(self, tokens):
        for t1, t2 in _pair_iter(tokens):
            self._second_pass_annotation(t1, t2)
            yield t1
Returns True if this entry has expired; False otherwise.
dataset/ETHPy150Open reefeed/wanish/wanish/tokenizers.py/PunktSentenceTokenizer._annotate_second_pass--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/api/memcache/memcache_stub.py/CacheEntry.CheckExpired