Original sentence: (Note that Austronesian, creoles, pidgin, and sign languages are excluded from this list).In addition to the above list of families, there are many languages in America that are not known to be related to any other language in the world
Edited sentence: (Note that Austronesian, Creoles, Pidgin, and Sign Languages are excluded from this list).In addition to the above list of families, there are many languages in America that are not related to any other language in the world