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 a structure that is composed of one or more types of tissues? 
Answer: organ. 
Sentence: A(n) organ is a structure that is composed of one or more types of tissues.

SOLUTION: An example of a structure that is composed of one or more types of tissues is an organ.

PROBLEM: Question: What process is most responsible for the extinction of most species of plants and animals that have lived on Earth? 
Answer: environmental changes. 
Sentence: Environmental changes is most responsible for the extinction of most species of plants and animals that have lived on earth.

SOLUTION: Environmental changes are the main reason why plants and animals, that have lived on the earth, have gone extinct.

PROBLEM: Question: Bones, cartilage, and what other thing make up the skeletal system? 
Answer: ligaments. 
Sentence: Bones, cartilage, and ligaments make up the skeletal system.

SOLUTION:
Bones, cartilage, and ligaments are part of the skeletal system in the human body.