Hi, T his obviously depends on how you define 'a sentence'. com/dictionary/sentence a word, clause, or phrase or a group of clauses or phrases forming a syntactic unit which expresses an assertion, a question, a command, a wish, an exclamation, or the performance of an action, that in writing usually begins with a capital letter and concludes with appropriate end punctuation, and that in speaking is distinguished by characteristic patterns of stress, pitch, and pauses Do you have a different definition? The words "no," "yes," "okay," etc.
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