using CSS for lowercase title attributes?

i’m a beginner to the wonderful world of wordpress… so please excuse this rather obtuse question:

just where the heck in any of the .php files is the title attribute for the comment-meta permalink defined?

my goal is making all the text (title attributes included) in the comment-meta lowercase, and was able to do so (except for the permalink’s title attribute!) by slipping a text-transform into my theme’s default.css file (i’m using a thematic child theme), like so:

#comments-list .comment-meta {
color:#666;
font-size:11px;
padding:0 0 9px 0px;
text-transform: lowercase;
}

but i’m going mad trying to find where WP is drawing the “Permalink to this comment” title attribute from. (a visual depiction of what i’m talking about: https://adumbrate.me/show-n-tell/permalink%20title%20attribute%20not%20lowercase.png)

is it possible to somehow use CSS to make this title attribute lowercase if i can’t located where it’s being pulled from in any of the .php files?

thanks in advance for the help!