diff --git a/robotreviewer/robots/pico_span_robot.py b/robotreviewer/robots/pico_span_robot.py
index e7aebbe..1787e25 100644
--- a/robotreviewer/robots/pico_span_robot.py
+++ b/robotreviewer/robots/pico_span_robot.py
@@ -98,23 +98,23 @@ def annotate(self, article):
         for sent in chain(article['title'].sents, article['abstract'].sents):
             words = [w.text for w in sent]
             preds = self.model.predict(words)
-            
+           
             last_label = "N"
-            span = []
+            start_idx = 0
             
-            for w, p in zip(words, preds):
+            for i, p in enumerate(preds):
                 
-                if p != last_label and span:
-                    out[label_dict[last_label]].append(' '.join(span).strip())
-                    span = []
-                    
-                if p != "N":
-                    span.append(w)
+                if p != last_label and last_label != "N":
+                    out[label_dict[last_label]].append(sent[start_idx: i].text.strip())
+                    start_idx = i
+
+                if p != last_label and last_label == "N":
+                    start_idx = i
 
                 last_label = p
 
             if last_label != "N":
-                out[label_dict[last_label]].append(' '.join(span).strip())
+                out[label_dict[last_label]].append(sent[start_idx:].text.strip())
 
         return out