```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>Principal Diagn@13:28:09</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>5</hlevel>
            <item_name>Alzheimer's disease</item_name>
            <item_key>\\i2b2_DIAG\i2b2\Diagnoses\Neurologic Disorders (320-389)\Degenerative diseases (330-337)\(331) Other cerebral degenerations\(331-0) Alzheimer's disease\</item_key>
            <item_icon>FA</item_icon>
            <tooltip>Diagnoses \ Neurologic Disorders \ Degenerative diseases \ Other cerebral degenerations \ Alzheimer's disease</tooltip>
            <class>ENC</class>
            <constrain_by_modifier>
                <modifier_name>Principal Diagnosis</modifier_name>
                <modifier_key>\\i2b2_DIAG\Principal Diagnosis\</modifier_key>
                <applied_path>\i2b2\Diagnoses\Neurologic Disorders (320-389)\%</applied_path>
            </constrain_by_modifier>
            <item_is_synonym>false</item_is_synonym>
        </item>
        <item>
            <hlevel>5</hlevel>
            <item_name>Alzheimer's disease</item_name>
            <item_key>\\i2b2_DIAG\i2b2\Diagnoses\Neurologic Disorders (320-389)\Degenerative diseases (330-337)\(331) Other cerebral degenerations\(331-0) Alzheimer's disease\</item_key>
            <item_icon>FA</item_icon>
            <tooltip>Diagnoses \ Neurologic Disorders \ Degenerative diseases \ Other cerebral degenerations \ Alzheimer's disease</tooltip>
            <class>ENC</class>
            <constrain_by_modifier>
                <modifier_name>Secondary Diagnosis</modifier_name>
                <modifier_key>\\i2b2_DIAG\Secondary Diagnosis\</modifier_key>
                <applied_path>\i2b2\Diagnoses\Neurologic Disorders (320-389)\%</applied_path>
            </constrain_by_modifier>
            <item_is_synonym>false</item_is_synonym>
        </item>
        <item>
            <hlevel>5</hlevel>
            <item_name>Alzheimer's disease</item_name>
            <item_key>\\i2b2_DIAG\i2b2\Diagnoses\Neurologic Disorders (320-389)\Degenerative diseases (330-337)\(331) Other cerebral degenerations\(331-0) Alzheimer's disease\</item_key>
            <item_icon>FA</item_icon>
            <tooltip>Diagnoses \ Neurologic Disorders \ Degenerative diseases \ Other cerebral degenerations \ Alzheimer's disease</tooltip>
            <class>ENC</class>
            <constrain_by_modifier>
                <modifier_name>Admit Diagnosis</modifier_name>
                <modifier_key>\\i2b2_DIAG\Admit Diagnosis\</modifier_key>
                <applied_path>\i2b2\Diagnoses\Neurologic Disorders (320-389)\%</applied_path>
            </constrain_by_modifier>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
</ns4:query_definition>

```

I want to find all patients with a diagnosis of Alzheimer's disease listed as their principal, secondary, or admit diagnosis under the Neurologic Disorders category in the Degenerative diseases section, specifically under Other cerebral degenerations. The query is set to have a specificity scale of 0, meaning it will return all instances of Alzheimer's disease, regardless of how specific the diagnosis is. The timing is set to ANY, meaning the query will look for instances of Alzheimer's disease at any point in time. The panel is set to 1, and the accuracy scale is set to 100, indicating that all instances of Alzheimer's disease should be returned. The query is not inverted, meaning it will return only positive instances of Alzheimer's disease. The total number of items to be returned is set to 1, and the query is not synonymous with any other items. The icon used for this query is FA, and the tooltip provides a description of the query's structure.