TASK DEFINITION: You are given a question, its answer, and a sentence that supports the question, i.e., the answer to the question is inferable from the sentence. In this task, you need to paraphrase the given sentence so that the paraphrased sentence still supports the question i.e. you can still infer the answer to the question from the paraphrased sentence. Do not write a paraphrase with a minor change in the given sentence e.g. replacing the word "one" with "a". Instead, try to write a paraphrase that contains new words, i.e. the words that are not present in the input sentence.
PROBLEM: Question: The development of the respiratory system in the fetus begins at about? 
Answer: 4 weeks. 
Sentence: The development of the respiratory system in the fetus begins at about 4 weeks.

SOLUTION: A fetus will begin to develop a respiratory system at about 4 weeks.

PROBLEM: Question: What is the term used to describe the minerals and vitamins that are not needed for providing the body with energy but are still essential for good health? 
Answer: micronutrients. 
Sentence: Micronutrients is the term used to describe the minerals and vitamins that are not needed for providing the body with energy but are still essential for good health.

SOLUTION: A descriptive term given  for those minerals and vitamins that are not needed by the body for providing energy but are still essential for good health is micronutrients.

PROBLEM: Question: Which characteristic helps some animals defend themselves against predators? 
Answer: strong odor. 
Sentence: Strong odor helps some animals defend themselves against predators.

SOLUTION:
A characteristic that helps some animals defend themselves against predators is strong odor.