what once was conviction is now affectation 
(ROOT (S (SBAR (WHNP (WP what)) (S (ADVP (RB once)) (VP (VBD was) (NP (NN conviction))))) (VP (VBZ is) (ADVP (RB now)) (NP (NN affectation)))))
(ROOT (S (SBAR (WHNP (WP )) (S (ADVP (RB )) (VP (VBD ) (NP (NN ))))) (VP (VBZ ) (ADVP (RB )) (NP (NN )))))