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(: Test: K-SeqExprCast-1031                              :)
(: Written by: Frans Englich                             :)
(: Date: 2006-10-05T18:29:38+02:00                       :)
(: Purpose: 'castable as' involving xs:gYear as source type and xs:dateTime as target type should always evaluate to false. :)
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not(xs:gYear("1999") castable as xs:dateTime)