| (: Name: filterexpressionhc4 :) | |
| (: Description: Simple filter expression involving union operator:) | |
| (: insert-start :) | |
| declare variable $input-context1 external; | |
| (: insert-end :) | |
| ($input-context1//empnum | $input-context1)//employee[xs:integer(hours[1]) gt 20] |