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(: Test: K-SeqExprInstanceOf-16                          :)
(: Written by: Frans Englich                             :)
(: Date: 2006-10-05T18:29:37+02:00                       :)
(: Purpose: A test whose essence is: `not("a string" instance of xs:untypedAtomic)`. :)
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not("a string" instance of xs:untypedAtomic)