welcome , if downbeat , missive 
(ROOT (FRAG (ADJP (JJ welcome)) (, ,) (SBAR (IN if) (FRAG (ADJP (JJ downbeat)))) (, ,) (NP (NN missive))))
(ROOT (FRAG (ADJP (JJ )) (, ) (SBAR (IN ) (FRAG (ADJP (JJ )))) (, ) (NP (NN ))))