artParser :: Parser Article
artParser = string "<pos>article</pos>" >>
    Article <$> numParser 
            <*> genderParser
            <*> caseParser
artParser :: Parser Article
artParser = string "<pos>article</pos>" >>
    Article <$> numParser 
            <*> genderParser
            <*> caseParser
artParser = string "<pos>article</pos>" >>
    Article <$> numParser 
            <*> genderParser
            <*> caseParser