The propositional form following the deep structure rewrite rules is of universal validity. 12 This assumption is based on the fact that the finite verb form occurs in all languages whereas other verbal forms may not occur in a specific language and therefore cannot have a universal validity. 13 Characteristics of Semantic Structure Semantic structure as noted above involves the meaning of a text. An analysis of the semantic structure is an attempt to bring out the significance of all the information carried by the surface structure. In order to analyze semantic structure it is first necessary to understand its features.
Semantic structure consists of units.
15 Any system must have some type of unit organization since the human mind is so constructed that it must group things together into some kind of organizational structure once the number of entities exceeds seven, according to some psychological studies. The mind cannot assimilate an endless list. Thus semantic structure consists of independent units of thought. A grouping of paragraphs may also be a unit, but is to be distinguished from the paragraph primarily by its size. As noted above the mind must organize units in order to comprehend and communicate them.