```xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns3:query_definition xmlns:ns2="http://www.i2b2.org/xsd/cell/crc/psm/1.1/" xmlns:ns4="http://www.i2b2.org/xsd/cell/crc/psm/analysisdefinition/1.1/" xmlns:ns3="http://www.i2b2.org/xsd/cell/crc/psm/querydefinition/1.1/">
    <query_name>UA-P/C - COLOR @12:52:53</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>UA-P/C - COLOR (LOINC:5778-6)</item_name>
            <item_key>\\i2b2_LABS\i2b2\Labtests\LAB\(LLB48) Urinalysis\(LLB49) Urinalysis\UA-COLOR\LOINC:5778-6\</item_key>
            <item_icon>LA</item_icon>
            <tooltip>Labtests \ Urinalysis \ Urinalysis \ Color (Group:UA-COLOR) \ Ua-p/c - color (LOINC:5778-6)</tooltip>
            <class>ENC</class>
            <constrain_by_value>
                <value_operator>IN</value_operator>
                <value_constraint>('AMBER')</value_constraint>
                <value_type>TEXT</value_type>
            </constrain_by_value>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
</ns3:query_definition>

```

I want to find all instances where the Urine Analysis (UA) P/C (Protein/Creatinine) Color test result is "AMBER" in the i2b2 database. This query will search for patients who have had a urinalysis performed and specifically look for those with an amber color result for the UA-P/C test, using the LOINC code 578-6. The time frame for this query is not restricted, so it will include results from any date. The specificity scale is set to 0, meaning that all matching records will be returned, and the panel accuracy scale is set to 100, indicating a high level of confidence in the results.