Update README.md

README.md

@@ -69,6 +69,22 @@ the property
 Moscow.
 
 
+## Problematic cases
+
+Definitions or findings written in point form are challenging for the model. For example:
+
+- (2) (i) the string (1) is a Sentence (S); frighten the boy is a Verb
+Phrase (VP) consisting of the Verb (V) frighten and the
+Noun Phrase (NP) the boy; sincerity is also an NP; the
+NP the boy consists of the Determiner (Det) the, followed
+by a Noun (N); the NP sincerity consists of just an N;
+the is, furthermore, an Article (Art); may is a Verbal
+Auxiliary (Aux) and, furthermore, a Modal (M).
+
+-(v) specification of a function m such that m(i) is an integer
+associated with the grammar G4 as its value (with, let us
+say, lower value indicated by higher number)
+
 
 
 ## Training and evaluation data