/usr/share/perl5/ is in libhtml-html5-parser-perl 0.301-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/HTML/
/usr/share/perl5/HTML/HTML5/
/usr/share/perl5/HTML/HTML5/Parser/
/usr/share/perl5/HTML/HTML5/Parser/Charset/
/usr/share/perl5/HTML/HTML5/Parser/Charset/DecodeHandle.pm
/usr/share/perl5/HTML/HTML5/Parser/Charset/Info.pm
/usr/share/perl5/HTML/HTML5/Parser/Charset/UnicodeChecker.pm
/usr/share/perl5/HTML/HTML5/Parser/Charset/UniversalCharDet.pm
/usr/share/perl5/HTML/HTML5/Parser/Charset/WebLatin1.pm
/usr/share/perl5/HTML/HTML5/Parser/Charset/WebThai.pm
/usr/share/perl5/HTML/HTML5/Parser/Error.pm
/usr/share/perl5/HTML/HTML5/Parser/TagSoupParser.pm
/usr/share/perl5/HTML/HTML5/Parser/Tokenizer.pm
/usr/share/perl5/HTML/HTML5/Parser/UA.pm
/usr/share/perl5/HTML/HTML5/Parser.pm