Chidi,
You might be right about the language bin; I enquired from the almost omniscient Alagba Google: The Oscars : what are the rules for foreign language films ? Her answer tallies with yours - with the emphasis on ”a predominantly non-English dialogue track” . So, where does that leave the Jahmaicans , the likes of Say Tokyo Kid and the other rabble-rousers who speak other varieties of English at the Owerri Motor Park? Does their jargon qualify as “a predominantly non-English dialogue track”?