Even though in everyday speech there are instances when who or what is being referred to can be inferred from context, non-pro-drop languages still require the pronoun. However, pro-drop languages allow those referential pronouns to be omitted, or be phonologically null. Among major languages, some which might be called pro-drop languages are Japanese, Korean and Hindi (featuring pronoun deletion not only for subjects, but for practically all grammatical contexts). South Asian languages such as Hindi, in general, have the ability to pro-drop any and all arguments. Chinese, Slavic languages, American Sign Language and Vietnamese also exhibit frequent pro-drop features. In contrast, non-pro-drop is an areal feature of many northern European languages (see Standard Average European), including French, (standard) German, English and Emilian.