The passage contains a paradox and a pun in the excerpt 'whose origin was a Terminus.'
The excerpt from the passage that contains a paradox and a pun is 'whose origin was a Terminus.' In this excerpt, Lady Bracknell expresses surprise at the notion that there are families or persons whose origin was a Terminus, creating a paradoxical situation. The pun lies in the play on words with 'Terminus,' which typically refers to a railway station, implying a connection with a person's origin in this context.
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