potential graid clause aggregation algo

[fmatter]

preds = [] (separate vt and vi?)
args = []
pred = null
for entry in entries:
if new sentence:
  add previous pred to preds
  delete args (warning)
if arg:
  if arg fills slot in pred:
    add to pred (as post or zero)
  else:
    add to args
if pred:
  for arg in args:
   if arg fills slot:
     add to pred (as pre or zero)
  else:
     warning(unresolvable arg)
  delete args
  add previous pred to preds