def METHOD_NAME(text, lang):
    if lang == 'en':
        return re.sub(r'\b(a|an|the)\b', ' ', text)
    elif lang == 'es':
        return re.sub(r'\b(un|una|unos|unas|el|la|los|las)\b', ' ', text)
    elif lang == 'hi':
        return text # Hindi does not have formal articles
    elif lang == 'vi':
        return re.sub(r'\b(của|là|cái|chiếc|những)\b', ' ', text)
    elif lang == 'de':
        return re.sub(r'\b(ein|eine|einen|einem|eines|einer|der|die|das|den|dem|des)\b', ' ', text)
    elif lang == 'ar':
        return re.sub('\sال^|ال', ' ', text)
    elif lang == 'zh':
        return text # Chinese does not have formal articles
    else:
        raise Exception('Unknown Language {}'.format(lang))