(:*******************************************************:)
(: Test: K-SeqExprCast-1217                              :)
(: Written by: Frans Englich                             :)
(: Date: 2006-10-05T18:29:39+02:00                       :)
(: Purpose: An empty string is not a valid lexical representation of xs:boolean. :)
(:*******************************************************:)
xs:boolean("")