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.

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 ) .
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 .

Natural language processing ( NLP ) is a subfield of linguistics , computer science , information engineering , and artificial intelligence concerned with the interactions between computers and human ( natural ) languages , in particular how to program computers to process and analyze large amounts of natural language data .
Natural Language Processing ( NLP ) is a field in Artificial Intelligence , and is also related to linguistics .

Calw ( -RSB- ; previously pronounced kalp and sometimes spelled " Kalb " accordingly ) is a town in the middle of Baden-Wu ̈ rttemberg in the south of Germany , capital and largest town of the district Calw .

Calw ( -RSB- ; locally khalp ) is a town in the middle of Baden-Wu ̈ rttemberg in the south of Germany .