Plain literal behaviour about sparqlee

[wschella]

Behavior mentioned above is implemented, but this should still be documented somewhere.

[wschella]

This does not take into consideration:

17.4.3.1.3 String Literal Return Type

Functions that return a string literal do so with the string literal of the same kind as the first argument (simple literal, plain literal with same language tag, xsd:string). This includes SUBSTR, STRBEFORE and STRAFTER.

The function CONCAT returns a string literal based on the details of all its arguments.

[wschella]

This behavior is implemented and final.