Sentence:  <WSD>Newest</WSD> on the list are John Ciardi , W. D. Snodgrass , I. A. Richards , Oscar Williams , Robert Hillyer , John Hall Wheelock , Stephen Vincent Benet , Edwin Muir , John Peal Bishop and Maxwell Bodenheim . 
Meaning of the word marked with <WSD> tags:  not of long duration; having just (or relatively recently) come into being or been made or acquired or discovered