(1st of this type)[Line 6 Sent ParlaMint-IT_2015-06-10-LEG17-Senato-sed-462.ana.seg1.1]: [L2 Syntax invalid-deprel] Invalid DEPREL value '-'.

(1st of this type)[Line 6 Sent ParlaMint-IT_2015-06-10-LEG17-Senato-sed-462.ana.seg1.1]: [L2 Syntax unknown-deprel] Unknown DEPREL label: '-'

(1st of this type)[Line 15 Sent ParlaMint-IT_2015-06-10-LEG17-Senato-sed-462.ana.seg1.1]: [L2 Format invalid-head] Invalid HEAD: '-1'.

(1st of this type)[Line 15 Sent ParlaMint-IT_2015-06-10-LEG17-Senato-sed-462.ana.seg1.1]: [L2 Syntax unknown-head] Undefined HEAD (no such ID): '-1'.

(1st of this type)::warning::...suppressing further errors regarding Syntax

(1st of this type)[Tree number 1 on line 6 Sent ParlaMint-IT_2015-06-10-LEG17-Senato-sed-462.ana.seg1.1]: [L2 Format skipped-corrupt-tree] Skipping annotation tests because of corrupt tree structure.

...suppressing further errors regarding Format

(1st of this type)::warning::Format errors: 416

(1st of this type)::warning::Syntax errors: 1218