if something can be used to determine a public of something else then that something can likely be used to determine that public of a whole of that something else
public_square is tangible_thing. people is another_way_of_saying_person. marking is tangible_thing. information_office is tangible_thing. persons is synonym_for_people. everything is one_thing. matter is tangible_thing. particular is fact. public_fact is one_everyone_knows. public_information is information.