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.

[EX Q]: 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.
[EX A]: A fetus will begin to develop a respiratory system at about 4 weeks.

[EX Q]: Question: Bones, cartilage, and what other thing make up the skeletal system? 
Answer: ligaments. 
Sentence: Bones, cartilage, and ligaments make up the skeletal system.
[EX A]: Bones, cartilage, and ligaments are part of the skeletal system in the human body.

[EX Q]: Question: What do you call water that flows out of the ground where an aquifer meets the surface? 
Answer: spring. 
Sentence: You call water that flows out of the ground where an aquifer meets the surface a(n) spring.
[EX A]:
A spring is water that flows from the ground where an aquifer meets the surface.