Fix check tokens and keys from spans ner

src/input_parsers/wiktor_ner.py

@@ -79,7 +79,7 @@ class WiktorNERInputParser(InputParser):
 
         annotations = []
         # Morphosyntactic annotations
-        if content.tokens:
+        if content.tokens():
             for token in content.tokens():
                 if token.lexemes:
                     for lexeme in token.lexemes:
@@ -99,7 +99,7 @@ class WiktorNERInputParser(InputParser):
                                     )
                                 )
         # NER annotations
-        if content.spans:
+        if 'ner' in content.get_span_types():
             for entity in content.spans('ner'):
                 if entity.type:
                     annotations.append(