Enhanced dependency parsing develop to master

combo/data/api.py

@@ -50,6 +50,10 @@ def sentence2conllu(sentence: Sentence, keep_semrel: bool = True) -> conllu.Toke
     for t in tokens:
         if type(t["id"]) == list:
             t["id"] = tuple(t["id"])
+        if t["deps"]:
+            for dep in t["deps"]:
+                if type(dep[1]) == list:
+                    dep[1] = tuple(dep[1])
     return _TokenList(tokens=tokens,
                       metadata=sentence.metadata)