TASK DEFINITION: In this task, you are given a question and a corresponding answer. Your task is to generate a fact statement that is useful in answering the given question.
PROBLEM: Question: objects made of what cause refraction of light? Answer: melted sand.

SOLUTION: objects made of glass cause refraction of light

PROBLEM: Question: The mounds at the beach are made of? Answer: silica.

SOLUTION: sand dunes are made of sand

PROBLEM: Question: Sweat is produced? Answer: when on a long jog in sweltering weather.

SOLUTION:
when the body is hot , sweat is produced to cool the body