Transforms data from paperscape to ngraph so that it can be used in PM
NOTE: the data was made available here: https://github.com/paperscape/paperscape-data under the Open Database License: http://opendatacommons.org/licenses/odbl/1.0/
The code in this repository is licensed under MIT license. According to Open Database License (ODBL), if you produce derivate work from original data, it should also be licensed under ODBL.