instruction:
In this task, you will be presented with a question and you have to answer the question based on your knowledge. Your answers should be as short as possible.
question:
What is the tradition of the instrument that commonly has four courses of doubled metal strings tuned in unison ?
answer:
Europe , has spread worldwide


question:
The director of `` Dingo '' directed a 1999 Ebertfest film pick written by who ?
answer:
Heather Rose


question:
What company produces the Aircraft flow by the Screwtops ?
answer:

Grumman Aircraft Company