Initial data commit

Task/Filter/XQuery/filter-1.xquery

@@ -0,0 +1,17 @@
+(: Sequence of numbers from 1 to 10 :)
+let $array := (1 to 10)
+
+(: Short version :)
+let $short := $array[. mod 2 = 0]
+
+(: Long version with a FLWOR expression :)
+let $long := for $value in $array
+             where $value mod 2 = 0
+             return $value
+
+(: Show the results :)
+return
+  <result>
+    <short>{$short}</short>
+    <long>{$long}</long>
+  </result>

Task/Filter/XQuery/filter-2.xquery

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<result>
+   <short>2 4 6 8 10</short>
+   <long>2 4 6 8 10</long>
+</result>