Anyone's

There are many theories about the sudden extinction of the dinosaurs, but the real cause still remains anyone's guess.

What will actually happen is anyone's guess.

Oi you, that's too much of a rip off by anyone's count! 6:4 is more than enough. Of course I'm the '6'.

Whether or not it's art is anyone's guess.

The police didn't find anyone's traces.

The cops didn't find anyone's traces.

I did that without asking for anyone's advice.

A gentleman is one who never hurts anyone's feelings unintentionally.

I can't remember anyone's name.

I don't need anyone's help.