Task: Question Answering
Input (English): We see that A-gen performance improves significantly with the joint model: both F1 and EM increase by about 10 percentage points. 
 Question: How much improvement does jointly learning QA and QG give, compared to only training QA?
Output (English): We see that A-gen performance improves significantly with the joint model: both F1 and EM increase by about 10 percentage points.