```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>(t) Circulatory sysDigestive syste-Events of pregn@10:15:28</query_name>
    <query_timing>ANY</query_timing>
    <specificity_scale>0</specificity_scale>
    <subquery_constraint>
        <first_query>
            <query_id>Event 1</query_id>
            <join_column>STARTDATE</join_column>
            <aggregate_operator>FIRST</aggregate_operator>
        </first_query>
        <operator>LESS</operator>
        <second_query>
            <query_id>Event 2</query_id>
            <join_column>STARTDATE</join_column>
            <aggregate_operator>FIRST</aggregate_operator>
        </second_query>
    </subquery_constraint>
    <subquery>
        <query_id>Event 1</query_id>
        <query_type>EVENT</query_type>
        <query_name>Event 1</query_name>
        <query_timing>SAMEINSTANCENUM</query_timing>
        <specificity_scale>0</specificity_scale>
        <panel>
            <panel_number>1</panel_number>
            <panel_timing>SAMEINSTANCENUM</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>Circulatory system</item_name>
                <item_key>\\i2b2_DIAG\i2b2\Diagnoses\Circulatory system (390-459)\</item_key>
                <item_icon>FA</item_icon>
                <tooltip>Diagnoses \ Circulatory system</tooltip>
                <class>ENC</class>
                <item_is_synonym>false</item_is_synonym>
            </item>
        </panel>
    </subquery>
    <subquery>
        <query_id>Event 2</query_id>
        <query_type>EVENT</query_type>
        <query_name>Event 2</query_name>
        <query_timing>SAMEINSTANCENUM</query_timing>
        <specificity_scale>0</specificity_scale>
        <panel>
            <panel_number>1</panel_number>
            <panel_timing>SAMEINSTANCENUM</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>Digestive system</item_name>
                <item_key>\\i2b2_DIAG\i2b2\Diagnoses\Digestive system (520-579)\</item_key>
                <item_icon>FA</item_icon>
                <tooltip>Diagnoses \ Digestive system</tooltip>
                <class>ENC</class>
                <item_is_synonym>false</item_is_synonym>
            </item>
        </panel>
        <panel>
            <panel_number>2</panel_number>
            <panel_timing>SAMEINSTANCENUM</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>Events of pregnancy</item_name>
                <item_key>\\i2b2_DIAG\i2b2\Diagnoses\Events of pregnancy (630-677)\</item_key>
                <item_icon>FA</item_icon>
                <tooltip>Diagnoses \ Events of pregnancy</tooltip>
                <class>ENC</class>
                <item_is_synonym>false</item_is_synonym>
            </item>
            <item>
                <hlevel>2</hlevel>
                <item_name>Genitourinary system</item_name>
                <item_key>\\i2b2_DIAG\i2b2\Diagnoses\Genitourinary system (580-629)\</item_key>
                <item_icon>FA</item_icon>
                <tooltip>Diagnoses \ Genitourinary system</tooltip>
                <class>ENC</class>
                <item_is_synonym>false</item_is_synonym>
            </item>
        </panel>
    </subquery>
</ns3:query_definition>

```

I want to find patients who have had an event related to the circulatory system and an event related to the digestive system or events of pregnancy at the same instance number, with a specificity scale of 0 and the time constraint being "ANY". The first query should have a join column of "STARTDATE" and an aggregate operator of "FIRST", while the second query should have the same join column and aggregate operator. The first subquery should look for diagnoses related to the circulatory system, while the second subquery should look for diagnoses related to the digestive system or events of pregnancy, with an accuracy scale of 10 and no inversion.