Io (Any = Some)

Io estas sur la tablo. Something's on the table.
Cxu estas io sur la tablo? Is there anything on the table?
Cxu vi vidas ion? Do you see anything?

Li estas ie en la gxardeno. He is somewhere in the garden.
Cxu li logxas ie apud vi? Does he live anywhere near you?
Cxu vi vidas lin ie? Do you see him anywhere?

Iu kantas. Someone sings.
Cxu iu kantas? Does anyone sing?
Mi ne vidas iun alian. I don't see anyone else.

Venu iam. Come anytime.
Cxu vi iam pensas pri mi? Do you ever think about me?
Cxu vi havas ian ideon? Do you have any idea?
Cxu tio estas ies? Is that anyone's?