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 Numbers as adjectives 

 I'm copy-editing Bath, Somerset, and I want to change a number (500 kilograms) into an adjective, so it has to be hyphenated and have no ""s"" on ""kilogram"". However, it is now within a conversion template. I have forgotten how to put in the hyphen and make it an adjective (and make the converted result also an adjective with a hyphen).   "