[Haskell-beginners] one element tuple

[bitur mail]

Hello,

This is a dumb question but ...

I'm just starting with the book Real World Haskell, and in chapter 2 it
mentions that "Haskell doesn't have a notion of a one-element tuple".

I am confused by this because I type, for example, (143), into the
interpreter and it does not complain. What does Haskell consider (143) to
be?

Thanks :)
DG
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