code: def annotation(self, type, set=None):
          
          """Will return a **single** annotation (even if there are multiple). Raises a ``NoSuchAnnotation`` exception if none was found"""
          for e in self.select(type,set,True,default_ignore_annotations):
              return e
          raise NoSuchAnnotation()
docs: Obtain a single annotation element.
  
          A further restriction can be made based on set.
  
          Arguments:
              Class (class): The class to select; any python class (not instance) subclassed off :class:`AbstractElement`
              Set (str): The set to match against, only elements pertaining to this set will be returned. If set to None (default), all elements regardless of set will be returned.
  
          Returns:
              An element (instance derived from :class:`AbstractElement`)
  
          Example::
  
              sense = word.annotation(folia.Sense, 'http://some/path/cornetto').cls
  
          See also:
              :meth:`AllowTokenAnnotation.annotations`
              :meth:`AbstractElement.select`
  
          Raises:
              :class:`NoSuchAnnotation` if no such annotation exists