```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>Gender@17:49:00</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>2</hlevel>
            <item_name>Gender</item_name>
            <item_key>\\i2b2_DEMO\i2b2\Demographics\Gender\</item_key>
            <item_icon>FA</item_icon>
            <tooltip>Demographic \ Gender</tooltip>
            <class>ENC</class>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
</ns4:query_definition>

```

I want to find all patients with any gender recorded in the i2b2 database. This query will search for the demographic information of patients and display the results based on their gender. The specificity scale is set to 0, meaning that the query will return all possible results, and the panel accuracy scale is set to 100, indicating high confidence in the results. The panel timing is set to ANY, meaning that the query will search for all available time periods, and the invert flag is set to 0, meaning that the query will not be inverted. The hlevel is set to 2, indicating that the query will search at the second hierarchical level, and the item key is set to "\\i2b2_DEMO\i2b2\Demographics\Gender\", indicating the specific location within the database where the information will be retrieved. The tooltip provides a description of the query, which is "Demographic \ Gender", and the class is set to ENC, which stands for Encounter. The item_is_synonym flag is set to false, meaning that the item name is not a synonym for another item.