{{ __('person.father') }} and {{ __('person.mother') }} may only be used for the biological parents and must therefore be of opposite sex. {{ __('person.parents') }} may be the biological parents, but may also be used for non-biological parents (gay or adoptive).
In the latter case, simply leave {{ __('person.father') }} and/or {{ __('person.mother') }} blank.

{{ __('app.unsaved_changes') }} ...