rdf xsd:string conversion

I am having trouble converting literals of type 'http://www.w3.org/XMLSchema#string'. When I do an rdf statement on a database I've loaded and try to pull out the object value it is being converted into a prolog atom. which means if the string text has words separated by spaces it is enclosed in single quotes. Even if I do string_to_atom/2 conversion the single quotes are placed into the string.

rdf(X,'http://www.w3.org/2000/01/rdf-schema#label',literal(type('http://www.w3.org/XMLSchema#string',Y))).

Y= 'some string of text'

or if just one word

Y = oneword      %No single quotes

when I attach string_to_atom(Str,Y). 

Str = "'some string of text'"    % single quotes propagate into the string

in the case of the oneword case it works fine:

Str = "oneword"


I want them the multiword string to not have the single quotes when inside a string.

Anyway to accomplish this conversion? The alternative is to do string processing on each after the conversion and manually remove the quotes.


Tom McGuire