Fine-grained analysis of correctly structured but incorrectly labeled predictions (‘✓ struct’ in Table 11). ‘Attribute error’ means that the predicted atomic category is correct except for a wrong or missing linguistic attribute (e.g., S vs. S[dcl]); ‘atom error’ means that an entirely wrong atomic category has been chosen (e.g., PP vs. NP); and ‘slash error’ means confusing / and [** backslash **]lash.