Update March 2013: The corpus has recently been hand-corrected and extended with extra layers of annotation, including named entities and syntactic parse structure. Please visit Scott Martin's site for this version of the data, and see also their COLING paper which includes a description of the dataset.
The original sentences were drawn from three sources and annotated by two annotators. The sentence pairs were drawn at random from the following corpora:
Both the MTC and MSR texts are covered by licencing agreements. Please ensure that you are covered by appropriate licences, described here and here.
Please refer to the README file for details of the file locations and formats, and the scripts included for processing the data.
Download the corpus