In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

Input: Consider Input: Erectile dysfunction ( also known as ED or " ( male ) impotence " ) is a sexual dysfunction characterized by the inability to develop and / or maintain an erection .

Output: Erectile dysfunction is also known as ED , impotence or male impotence .


Input: Consider Input: A Horn clause with exactly one positive literal is a definite clause or a strict Horn clause ; a definite clause with no negative literals is sometimes called a unit clause , and a unit clause without variables is sometimes called a fact ; and a Horn clause without a positive literal is sometimes called a goal clause ( note that the empty clause consisting of no literals is a goal clause ) .

Output: A Horn clause with exactly one positive literal is a definite clause ; a definite clause with no negative literals is sometimes called a “ fact ” ; and a Horn clause without a positive literal is sometimes called a goal clause .


Input: Consider Input: For example , the absolute value of a real number is always " non-negative " , but is not necessarily " positive " in the first interpretation , whereas in the second interpretation it is called " positive " and is not necessarily " strictly positive " .


Output: For example , the absolute value of a real number is always non-negative , but is not necessarily positive .


