(select
 (bgp
   (triple ?:x ?:p
           #S(SPOCQ:UNSUPPORTED-TYPED-LITERAL
              :ID COMMON-LISP:NIL
              :LEXICAL-FORM "x
y"
              :DATATYPE-URI <http://example.org/ns#someType>
              :CONDITION COMMON-LISP:NIL)))
 (?:x))