While writers whose business it is to be witty often fail to produce, grave authors occasionally are mirthful when laughter is farthest from their minds.
( ( While ( ( writers ( ( whose business ) ( it ( is ( to ( be ( witty often ) ) ) ) ) ) ) ( fail ( to produce ) ) ) ) ( , ( ( grave authors ) ( occasionally ( ( are ( mirthful ( when ( laughter ( is ( farthest ( from ( their minds ) ) ) ) ) ) ) ) . ) ) ) ) )
(ROOT (S (SBAR (IN While) (S (NP (NP (NNS writers)) (SBAR (WHNP (WP$ whose) (NN business)) (S (NP (PRP it)) (VP (VBZ is) (S (VP (TO to) (VP (VB be) (VP (VBN witty) (ADVP (RB often)))))))))) (VP (VBP fail) (S (VP (TO to) (VP (VB produce))))))) (, ,) (NP (JJ grave) (NNS authors)) (ADVP (RB occasionally)) (VP (VBP are) (ADJP (JJ mirthful) (SBAR (WHADVP (WRB when)) (S (NP (NN laughter)) (VP (VBZ is) (NP (NP (JJS farthest)) (PP (IN from) (NP (PRP$ their) (NNS minds))))))))) (. .)))
Writers who's business it is to be smart always produce.
( ( Writers ( who ( 's ( business ( it ( is ( to ( be smart ) ) ) ) ) ) ) ) ( always ( produce . ) ) )
(ROOT (S (NP (NP (NNP Writers)) (SBAR (WHNP (WP who)) (S (VP (VBZ 's) (NP (NP (NN business)) (SBAR (S (NP (PRP it)) (VP (VBZ is) (S (VP (TO to) (VP (VB be) (ADJP (JJ smart))))))))))))) (ADVP (RB always)) (VP (VBP produce)) (. .)))