How do I use the word irony in a sentence?

What name was given to the western european christian church after the religious schism in 1054 ce?

Read the sentence from last lecture by randy pausch. all right, so what we’re not talking about today, we are not talking about cancer, because i spent a lot of time talking about that and i’m really not interested. pausch tells his audience this because he wants them to know that

Read this expert from herman melville’s the lightning rod man which contains a mythological allusion mr. jupiter tonans i am not accustom to be commanded in my own house call me now by the paga name you are profane in this time of terror which of these statements best conveys the meaning of the illusion