Sentence:  After Gagarin became the Greatest Man in the World , for a nation that does not believe in the cult of personality or in careerism , Moreland wrote me a <WSD>letter</WSD> in which he said : `` I am not interested in how long a bee can live in a vacuum , or how far it can fly . 
Meaning of the word marked with <WSD> tags:  a written message addressed to a person or organization