TASK DEFINITION: Generate a correct and concise answer for the question based on the words in the context.
PROBLEM: Context : The 2015 Belgian Grand Prix (formally the 2015 Formula 1 Shell Belgian Grand Prix) was a Formula One motor race held on 23 August 2015 at the Circuit de Spa-Francorchamps in Spa, Belgium. 
Question : On what date did 2015 Belgian Grand Prix occur?

SOLUTION: 23 August 2015

PROBLEM: Context : In March 2015, Digital Bros, through subsidiary 505 Games, purchased 2.67% stock of Swedish game developer Starbreeze Studios. 
Question : What is 505 Games's parent company?

SOLUTION: Digital Bros

PROBLEM: Context : Elementary OS (styled ``elementary OS'') is a Linux distribution based on Ubuntu. 
Question : Which is the basis of Elementary OS?

SOLUTION:
Ubuntu

