def _contains_blinded_text(stats_xml):
tree = ET.parse(stats_xml)<EOL>root = tree.getroot()<EOL>total_tokens = int(root.find('<STR_LIT>').text)<EOL>unique_lemmas = int(root.find('<STR_LIT>').get('<STR_LIT>'))<EOL>return (unique_lemmas / total_tokens) < <NUM_LIT><EOL>
Heuristic to determine whether the treebank has blinded texts or not