instruction:
In this task, You are given an open-domain question that can be answered based on factual information. Your task is to provide \*short\* answer (in a few words only) for the given question. The short answer can be one or more entities or it can also be boolean \*yes\* or \*no\*.
question:
who is called the father of green revolution
answer:
Norman Borlaug


question:
when were air brakes first used on trucks
answer:
the early 20th century


question:
who wrote the original story of phantom of the opera
answer:

Gaston Leroux