<prompt> Translate the following text to EnglishWao kama kwamba Birthday Letters inachanganya Hughes alama ya biashara ya vurugu - wanyama kufa, dhoruba moors - na huruma yake kwa Plath na introspection.  <response>: They like that Birthday Letters combines Hughes trademark violence--dying animals, stormy moors--with his compassion for Plath and introspection. 