Adjectives are the words which qualify or modifies a noun or pronoun in a sentence. It describes them by providing a description of its size, origin, color and so on. For example, good, bad, old, brown, broken etc.
In the above phrase, The great Jackie Robinson won the MVP in 1949, the adjective is 'The great.'
It qualifies the noun<em> 'Jackie' </em>and describes him to be <em>'great.'</em>
