@prefix :     <http://example.org/ns#> .
@prefix fn:   <http://example.org/functions#> .

:x :p 1 .
:x :p 2 .

:y :q 2 .
:y :p "2" .
:y :p 2.0 . # Fails - not an integer
:y :p 2.5 . # Fails

:z :p 3 .
:z :p 4 .


