PartOfSpeech:
    | "adjective"
    | "adposition"
    | "adverb"
    | "auxiliary"
    | "coordinating conjunction"
    | "determiner"
    | "interjection"
    | "noun"
    | "numeral"
    | "particle"
    | "pronoun"
    | "proper noun"
    | "subordinating conjunction"
    | "verb"
    | "other"