TASK DEFINITION: Generate a correct and concise answer for the question based on the words in the context.
PROBLEM: Context : Shiira used WebKit for rendering and scripting. 
Question : Which is the basis of Shiira?

SOLUTION: WebKit

PROBLEM: Context : George W. George died of Parkinson's disease in Manhattan on November 7, 2007. 
Question : Which medical condition afflicts George W. George?

SOLUTION: Parkinson's disease

PROBLEM: Context : Nina Bonner (born 25 March 1972 in New South Wales) is a retired female field hockey goalkeeper from Australia. 
Question : What is the gender Nina Bonner is known by?

SOLUTION:
female