Man pages matching name software::license::gpl_3 in section 3pm:

Software::License::GPL_3.3pm.en	debian 10 / libsoftware-license-perl
Software::License::GPL_3.3pm.en	debian 11 / libsoftware-license-perl
Software::License::GPL_3.3pm.en	debian 12 / libsoftware-license-perl