xmlMatch.scala

import xml._
XML.loadString("""<?xml version="1.0" encoding="UTF-8" ?>
<kml xmlns="http://earth.google.com/kml/2.0"><Response>
  <name>32.867930,-117.131160</name>
  <Status>
    <code>200</code>
    <request>geocode</request>
  </Status>
  <Placemark id="p1">
    <address>Miramar, CA, USA</address>
    <AddressDetails Accuracy="4" xmlns="urn:oasis:names:tc:ciq:xsdschema:xAL:2.0"><Country><CountryNameCode>US</CountryNameCode><CountryName>USA</CountryName><AdministrativeArea><AdministrativeAreaName>CA</AdministrativeAreaName><SubAdministrativeArea><SubAdministrativeAreaName>San Diego</SubAdministrativeAreaName><Locality><LocalityName>Miramar</LocalityName></Locality></SubAdministrativeArea></AdministrativeArea></Country></AddressDetails>
    <ExtendedData>
      <LatLonBox north="32.9311267" south="32.8561736" east="-117.0543364" west="-117.1823958" />
    </ExtendedData>
    <Point><coordinates>-117.1183661,32.8936581,0</coordinates></Point>
  </Placemark>
  <Placemark id="p2">
    <address>San Diego, CA 92126, USA</address>
    <AddressDetails Accuracy="5" xmlns="urn:oasis:names:tc:ciq:xsdschema:xAL:2.0"><Country><CountryNameCode>US</CountryNameCode><CountryName>USA</CountryName><AdministrativeArea><AdministrativeAreaName>CA</AdministrativeAreaName><SubAdministrativeArea><SubAdministrativeAreaName>San Diego</SubAdministrativeAreaName><Locality><LocalityName>San Diego</LocalityName><PostalCode><PostalCodeNumber>92126</PostalCodeNumber></PostalCode></Locality></SubAdministrativeArea></AdministrativeArea></Country></AddressDetails>
    <ExtendedData>
      <LatLonBox north="32.9419330" south="32.8509410" east="-117.1129030" west="-117.2143980" />
    </ExtendedData>
    <Point><coordinates>-117.1382404,32.8976097,0</coordinates></Point>
  </Placemark>
</Response></kml>
""")  \ "Response" \ "Placemark" \ "address" toList match {
      case a :: _ => a.text
      case _ => "Not found"
    }

// Jorge Ortiz offers this bit of elegance:

(... \ "Response" \ "Placemark" \ "address").
        firstOption.map(_.text).getOrElse(latLong)