 They then took the model they had generated for the telephone speech data and applied it to a corpus of written material: the Wall Street Journal corpus (WSJ), a collection of 1987–9 newspaper copy, only roughly edited. The main relevant difference with written language is that the language producer has more opportunity to reflect thoughtfully on how they are going to phrase things. It was reasonable to think that a model based on speech data might not transfer well. But instead the model had 93.5% accuracy. The authors conclude is that “the model for spoken English transfers beautifully to written”. The main difference between the corpora was found to be a slightly higher probability of the recipient-PP structure in written English.