Put s over the subject, ar over the articles, ad over the adjectives, and pa over the predicate adjectives.

the milk tastes sour.

The - AR ( the article).

milk - S (the subject).

sour - PA (the predicate adjective).

Explanation:

A predicate adjective is a subject complement that follows a linking verb such as is, am, were, smell, feel, taste, look, sound, seem etc. In this sentence The milk tastes sour, the linking verb is tastes.

c, his tragic flaw to cause his downfall