The software requirements elicitation is an activity for the first phase of the software life cycle, in this, they use different diagrams that help the analyst to make the process of identifying and validating software requirements, among these, is used diagram KAOS goal enabling: (i) establish the responsibilities of the actors, and (ii) to express stakeholders (users) the importance of future software. In studies using the diagram of objectives still problems such as: (i) the analyst who prepared the diagram of objectives subjectively, and (ii) not identified traceability objectives diagram obtained in relation to the universe of discourse presented by the applicant in natural language. In this paper, we make the identification of basic elements (objective requirement actor) diagram KAOS goal from: (i) The use of natural language, and (ii) the definition of grammar rules. This process serves as the basis for: (i) identification of the other elements of the diagram KAOS goal, and (ii) the automatic production of this diagram.