```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>Congenital anom@16:30:50</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>Congenital anomalies</item_name>
            <item_key>\\i2b2_DIAG\i2b2\Diagnoses\Congenital anomalies (740-759)\</item_key>
            <item_icon>FA</item_icon>
            <tooltip>Diagnoses \ Congenital anomalies</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 congenital anomalies (ICD-9 codes 740-759) at any time during their medical history, with a specificity scale of 0, a panel timing of ANY, and a panel accuracy scale of 100, using the i2b2 query builder. The query will search for this information within the Diagnoses section of the i2b2 database, and the class of the item is ENC.