A girl wearing a blue shirt is sitting on a couch and drinking soda next to a girl with blond-hair.
A girl in a blue shirt sips her soda on a couch next to a blond-haired girl.
"Wearing a blue shirt" is a rephrasing of "in a blue shirt", drinking can imply sipping, "girl with blond-hair" is a rephrasing of "blond-haired girl".
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