Before revision:  Using as case studies large datasets of taxi rides from Chicago and New York, we ask questions such as "When does it make sense for different taxi companies to combine their data?"  and "How should different companies be compensated for the data that they share?".
After revision:  Using as case studies large datasets of taxi rides from Chicago and New York, we ask questions such as "When does it make sense for different taxi companies to combine their data?" , and "How should different companies be compensated for the data that they share?".