Before revision:  A  tree-based decoder is then applied to ensure the grammar correctness of the generated text . It also enables the flexibility of making manipulations on different levels of text, such as sentence (AdvCodec(sent)) and word (AdvCodec(word)) levels .
After revision:  A tree-based decoder is then applied to ensure the grammar correctness of the generated text and manipulate it on either sentence (T3(Sent)) or word (T3(Word)) level .