code: func LoadEWT(filename string) []SentenceTag {
  
  	r, err := zip.OpenReader(filename)
  	if err != nil {
  		panic(err)
  	}
  	defer r.Close()
  
  	sentences := make([]SentenceTag, 0)
  
  	for _, f := range r.File {
  		contents, err := f.Open()
  		if err != nil {
  			panic(err)
  		}
  		sentences = append(sentences, ReadConllu(contents)...)
  		contents.Close()
  	}
  
  	return sentences
  }
docs: // LoadEWT loads a zipped English Web Treebank (as donated by Google)