How to extract only a part of one line?

I want to extract the essid in a dump file from airodump-ng using grep. The part where I want to extract looks like this:

    <SSID first-time="Wed Feb 25 07:06:57 2015" last-time="Wed Feb 25 07:14:23 2015">
        <type>Beacon</type>
        <max-rate>54.000000</max-rate>
        <packets>3371</packets>
        <beaconrate>10</beaconrate>
        <encryption>WPA2 AES-CCM </encryption>
        <essid cloaked="false">WLAN-123651234</essid>
    </SSID>
    <BSSID>24:65:11:3A:68:02</BSSID>
    <manuf>Unknown</manuf>
    <channel>1</channel>
    <freqmhz>2412 23193</freqmhz>
    <maxseenrate>54000</maxseenrate>
    <packets>

So I want to extract the essid "WLAN-123651234" in line 7. How do I do this ? And it shouldn't matter how long the essid is because i want to use that way not only for that essid, so it needs to be extracted like this:

grep >....< dumpfile.netxml
Output: WLAN-1234651234