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: What is another word for cellular drinking? 
Answer: pinocytosis. 
Sentence: Pinocytosis is another word for cellular drinking.

SOLUTION: Another way to say "cellular drinking" is by saying pinocytosis.

PROBLEM: Question: Which human organ system produces most of the hormones that regulate body functions? 
Answer: endocrine. 
Sentence: The endocrine system produces most of the hormones that regulate body functions.

SOLUTION: Human body function is regulated by hormones that are primarily produced by the endocrine system.

PROBLEM: Question: What part of the sperm contains the nucleus? 
Answer: head. 
Sentence: The head of the sperm contains the nucleus.

SOLUTION:
Nucleus is found in the head part of the sperm.