doc/TODO: NE involvement seems most important right now
data/trec: Fix out-of-date question 1395
Collection eval: Track and report also per-question processing time
StanfordParser: Ignore sentences longer than 40 tokens

StanfordParser has o(N^2) time and memory complexity, which means
that we can easily run out of heap with long sentences; but limit
to 80 tokens might do. However, it also gets to take really long
so we are fairly conservative in the sentences we allow to avoid
long hangs.