<?xml version="1.0"?>
<uids>
    <!-- Some Unique Text -->
    <!-- VID_2564 -->
    <uid>1111</uid>
    <!-- Some Title -->
    <!-- VID_8374 -->
    <uid>2222</uid>
    <!-- Some Title -->
    <!-- VID_1128 -->
    <uid>3333</uid>
    <!-- A Different Title -->
    <!-- VID_9581 -->
    <uid>4444</uid>
</uids>

/uids/uid[normalize-space(preceding-sibling::comment()[1]) = 'VID_1128' and normalize-space(preceding-sibling::comment()[2]) = 'Some Title']