```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@16:25:26</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>100</panel_accuracy_scale>
        <invert>0</invert>
        <total_item_occurrences>1</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>
    </panel>
</ns4:query_definition>

```

I want to find all patients with a diagnosis of mild dementia at any time in their medical record, using the Clinical Dementia Rating (CDR) scale from the OASIS Clinical Measures category. The specificity scale is set to 0, meaning that the query is not restricted to a specific level of certainty, and the accuracy scale is set to 100, indicating a high level of accuracy. The panel number is 1, and the timing is set to ANY, meaning that the diagnosis can be from any point in time. The invert option is set to 0, meaning that the query is not inverted or excluding any records. There is only one item in this query, and it is looking for the exact phrase "mild dementia" within the specified category.