forked from GitHub/gf-core
when debbuging labels, I find it useful to have comments saying what's the original sentence (lazy, I know) and the original tree (depending on the treebank, the trees can be similar). I know this is not the goal exactly, but UDv2 treebanks (http://universaldependencies.org/format.html) should always have a 'text =' comment, and a 'sent_id =' comment (which would be easy to implement too, but not that useful).