NodeSeq
<result>
     <title>Blabla</title>
     <remarks> Hallo Welt. </remarks>
</result><result>
     <title>Blubabla</title>
     <remarks> Hello Blu </remarks>
</result><result>
     <title>Blubabla</title>
     <remarks> rem 2 </remarks>
</result>
List(<book><title>Blabla</title></book>)
<result>
     <name>John</name>
     <street> Elm Street</street>
     <city>Dolphin City</city>
     <phone where="work"> +41 21 693 68 67</phone>
     <phone where="mobile">+41 79 602 23 23</phone>
</result>
namespaces
validation - elements
validation - attributes