there is one
There is one less.
Il y en a un que je pourrais suivre.
There's one I could follow.
— Le Hobbit : Un voyage inattendu (2012)
S'il y en a un qui tombe, on tombe tous.
If one of us falls, we all fall.
— Les Lundis au soleil (2002)
Yes, there is one.
Is there one for me?
There's one there.
Of course there is one.