This is the story entitled "The Importance of Being Earnest".
Miss Prism's expressing concern for Jack and admiration for his devotion
to his brother are ironic because she knows from the start that Jack’s
pretences of having a brother are eventually real. He then finds out that
Algernon is his younger brother upon questioning Miss Prism at the last part of
the story.
<span>The story is an example of situation irony because the audience did not
expect that Jack has a brother and that it will be Algernon, as opposite to
their expected ending. </span>
It can be said that the context in which the play can be written (for example Shakespeare time) would be relevant to understand the context of the story. Background information about dates, customs role of men and women, religion and politics might be crucial to understand the play better.
There are 3 lines in a Tercet.