We compare LSTM-LM (GS) to two very strong semi-supervised NN parsers: an ensemble of five MTPs trained on 11 million trees of the highconfidence corpus 4 (HC)<cite> (Vinyals et al., 2015)</cite> ; and an ensemble of six one-to-many sequence models trained on the HC and 4.5 millions of EnglishGerman translation sentence pairs (Luong et al., 2016) .