1. A computer-implemented cognitive system, comprising: one or more hardware processors; a cognitive engine operable to execute on one or more of the hardware processors and further operable to receive first data representative of a domain associated with a question, the cognitive engine further operable to search a database of sources and retrieve information associated with the domain, the cognitive engine further operable to receive second data representative of an answer in an essay form to the question, the second data comprising a plurality of statements that make up the answer in the essay form, the cognitive engine further operable to determine whether a statement is accurate or inaccurate, for each of the plurality of statements based on matching the statement with the information associated with the domain according to an accuracy threshold; a scoring module operable to execute on one or more of the hardware processors and further operable to determine an overall score for the answer based on a number of statements in the answer in the essay form determined to be accurate, a number of statements in the answer in the essay form determined to be inaccurate, a number of duplicate statements in the answer in the essay form relative to a total number of statements in the answer in the essay form; and a visual assessment module operable to generate a visual graphics representing accurate and inaccurate statements determined by the cognitive engine and the overall score; a graphical user interface operable to display the visual graphics and interact with a user to allow the user to modify the overall score; and a comparative assessment module operable to execute on one or more of the hardware processors and further operable to search a database of answers to the question to identify a plurality of comparative statements comprising answers provided by a plurality of individuals in answering the question, the comparative assessment module further operable to provide the plurality of comparative statements to the cognitive engine, wherein the cognitive engine matches the statement with the plurality of comparative statements to determine whether the statement is accurate or inaccurate, the comparative statements comprising an essay-type of answers given by the plurality of individuals.
5. The system of claim 1 , wherein the cognitive engine invokes the comparative assessment module for determining whether the statement is accurate or inaccurate, responsive to determining that the statement matches with a confidence that is below the accuracy threshold.