A text is an extended structure of syntactic units i. e. text as super-sentence such as words, groups, and clauses and textual units that is marked by both coherence among the elements and completion . A non-text consists of random sequences of linguistic units such as sentences, paragraphs, or sections in any temporal and/or spatial extension. A naturally occurring manifestation of language, i. e. as a communicative language event in a context. The surface text is the set of expressions actually used; these expressions make some knowledge explicit, while other knowledge remains implicit, though still applied during processing. A term used in linguistics to refer to any passage- spoken or written, of whatever length, that does form a unified whole….