```xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns4:query_definition xmlns:ns2="http://www.i2b2.org/xsd/cell/crc/psm/1.1/" xmlns:ns4="http://www.i2b2.org/xsd/cell/crc/psm/querydefinition/1.1/" xmlns:ns3="http://www.i2b2.org/xsd/cell/crc/psm/analysisdefinition/1.1/">
    <query_name>mild dementia@16:48:45</query_name>
    <query_timing>ANY</query_timing>
    <specificity_scale>0</specificity_scale>
    <panel>
        <panel_number>1</panel_number>
        <panel_timing>ANY</panel_timing>
        <panel_accuracy_scale>0</panel_accuracy_scale>
        <invert>0</invert>
        <total_item_occurrences>2</total_item_occurrences>
        <item>
            <hlevel>4</hlevel>
            <item_name>mild dementia</item_name>
            <item_key>\\BIRN\BIRN\oasis\Clinical Measures\Clinical Dementia Rating (CDR)\mild dementia\</item_key>
            <item_icon>LA</item_icon>
            <tooltip>oasis \ Clinical Measures \ Clinical Dementia Rating (CDR) \ mild dementia</tooltip>
            <class>ENC</class>
            <item_is_synonym>false</item_is_synonym>
        </item>
        <item>
            <hlevel>4</hlevel>
            <item_name>Beyond college</item_name>
            <item_key>\\BIRN\BIRN\oasis\Demographics\Education\Beyond college\</item_key>
            <item_icon>LA</item_icon>
            <tooltip>oasis \ Demographics \ Education \ Beyond college</tooltip>
            <class>ENC</class>
            <item_is_synonym>false</item_is_synonym>
        </item>
        <item>
            <hlevel>6</hlevel>
            <item_name>Biopsy of external ear</item_name>
            <item_key>\\i2b2_PROC\i2b2\Procedures\PRC\ICD9 (Inpatient)\(18-20) Operations on ear\(p18) Operations on external ear\(p18-1) Diagnostic procedures on ~\(p18-12) Biopsy of external ear\</item_key>
            <item_icon>LA</item_icon>
            <tooltip>Procedures \ ICD9 (Inpatient) \ Operations on ear \ Operations on external ear \ Diagnostic procedures on external ear \ Biopsy of external ear</tooltip>
            <class>ENC</class>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
</ns4:query_definition>

```

I want to find patients with a diagnosis of mild dementia, who have a level of education beyond college, and have had a biopsy of their external ear performed. The query should include any timing, have a specificity scale of 0, and an accuracy scale of 0. The panel will consist of three items: mild dementia, beyond college education, and biopsy of external ear.