给出一段英文文本，要求将其中所有的单词的首字母大写。


原始文本: natural language processing (nlp) is a subfield of linguistics, computer science, and artificial intelligence concerned with the interactions between computers and human language.
New Text: Natural Language Processing (NLP) Is A Subfield Of Linguistics, Computer Science, And Artificial Intelligence Concerned With The Interactions Between Computers And Human Language.