Poetry
As with most languages, there are poems created in sign language, just as there are poems in spoken language (click here and here). Concerning poetry, much is lost in translation. Whatever its language of origin - English, Djerma, ASL, Sindebele, Mandarin, or any other - a poem is simply not wholly translatable. It is for this fact that (sad to say) the beauty and impact of an ASL poem simply cannot be completely conveyed in English, and vice versa. Hard to believe? Try this little experiment: Imagine trying to translate a poem from English to ... a canvas. That's right. Paint a poem. This is one of the challenges faced by interpreters asked to render poetry.
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Song