```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>Pneumoconiosis @14:03:02</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>4</hlevel>
            <item_name>Pneumoconiosis due to silica NOS</item_name>
            <item_key>\\i2b2_DIAG\i2b2\Diagnoses\Respiratory system (460-519)\Lung diseases due to external irritants (500-508)\(502) Pneumoconiosis due to other~\</item_key>
            <item_icon>LA</item_icon>
            <tooltip>Diagnoses \ Respiratory system \ Lung diseases due to external irritants \ Pneumoconiosis due to other silica or silicates</tooltip>
            <class>ENC</class>
            <item_is_synonym>true</item_is_synonym>
        </item>
        <item>
            <hlevel>4</hlevel>
            <item_name>Pneumoconiosis</item_name>
            <item_key>\\i2b2_DIAG\i2b2\Diagnoses\Respiratory system (460-519)\Lung diseases due to external irritants (500-508)\(505) Pneumoconiosis, unspecified\</item_key>
            <item_icon>LA</item_icon>
            <tooltip>Diagnoses \ Respiratory system \ Lung diseases due to external irritants \ Pneumoconiosis, unspecified</tooltip>
            <class>ENC</class>
            <item_is_synonym>true</item_is_synonym>
        </item>
    </panel>
</ns4:query_definition>

```

I want to find patients diagnosed with Pneumoconiosis due to silica or silicates, as well as those with unspecified Pneumoconiosis, within the Respiratory system and Lung diseases due to external irritants categories in the Diagnoses section of the i2b2 database.