```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>Inpatient visit@14:29:20</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>3</hlevel>
            <item_name>Inpatient visit</item_name>
            <item_key>\\i2b2_VISIT\i2b2\Visit Details\Visit type\Inpatient visit\</item_key>
            <item_icon>LA</item_icon>
            <tooltip>Visit Details \ Visit type \ Inpatient visit</tooltip>
            <class>ENC</class>
            <constrain_by_date>
                <date_from>1979-12-01T00:00:00.000-05:00</date_from>
            </constrain_by_date>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
</ns4:query_definition>

```

I want to find all instances of inpatient visits in the i2b2 database with any timing and specificity scale set to 0, where the panel number is 1, accuracy scale is 100, and the total number of occurrences is 1. The query should be constrained by the date from December 1st, 1979.