Yes, Elizabeth Taylor, Norman Mailer, Warren Beatty, David Rockefeller, and Mick Jagger will go to a nightclub, but only if they are reasonably certain that Diana Ross, William F. Buckley Jr., Salvador Dali, Betty Ford, Frank Sinatra, Mikhail Baryshnikov, and the king of Cyprus will show up too--and vice versa.
( Yes ( , ( ( ( ( ( ( ( ( ( ( ( Elizabeth Taylor ) , ) ( Norman Mailer ) ) , ) ( Warren Beatty ) ) , ) ( David Rockefeller ) ) , ) and ) ( Mick Jagger ) ) ( ( ( ( ( ( will ( go ( to ( a nightclub ) ) ) ) , ) but ) only ) ( if ( they ( ( are ( reasonably ( certain ( that ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( Diana Ross ) , ) ( William ( F. ( Buckley Jr. ) ) ) ) , ) ( Salvador Dali ) ) , ) ( Betty Ford ) ) , ) ( Frank Sinatra ) ) , ) ( Mikhail Baryshnikov ) ) , ) and ) ( ( the king ) ( of Cyprus ) ) ) ( will ( show ( up too ) ) ) ) ) ) ) ) ( -- ( and ( vice versa ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (INTJ (UH Yes)) (, ,) (NP (NP (NNP Elizabeth) (NNP Taylor)) (, ,) (NP (NNP Norman) (NNP Mailer)) (, ,) (NP (NNP Warren) (NNP Beatty)) (, ,) (NP (NNP David) (NNP Rockefeller)) (, ,) (CC and) (NP (NNP Mick) (NNP Jagger))) (VP (VP (MD will) (VP (VB go) (PP (TO to) (NP (DT a) (NN nightclub))))) (, ,) (CC but) (ADVP (RB only)) (SBAR (IN if) (S (NP (PRP they)) (VP (VBP are) (ADJP (RB reasonably) (JJ certain) (SBAR (IN that) (S (NP (NP (NNP Diana) (NNP Ross)) (, ,) (NP (NNP William) (NNP F.) (NNP Buckley) (NNP Jr.)) (, ,) (NP (NNP Salvador) (NNP Dali)) (, ,) (NP (NNP Betty) (NNP Ford)) (, ,) (NP (NNP Frank) (NNP Sinatra)) (, ,) (NP (NNP Mikhail) (NNP Baryshnikov)) (, ,) (CC and) (NP (NP (DT the) (NN king)) (PP (IN of) (NP (NNP Cyprus))))) (VP (MD will) (VP (VB show) (ADVP (RB up) (RB too))))))) (PRN (: --) (CC and) (ADVP (RB vice) (RB versa))))))) (. .)))
Nobody is going to be to any nightclub ever. 
( Nobody ( ( is ( going ( to ( ( be ( to ( any nightclub ) ) ) ever ) ) ) ) . ) )
(ROOT (S (NP (NN Nobody)) (VP (VBZ is) (VP (VBG going) (S (VP (TO to) (VP (VB be) (PP (TO to) (NP (DT any) (NN nightclub))) (ADVP (RB ever))))))) (. .)))