if it 's not entirely memorable 
(ROOT (SBAR (IN if) (S (NP (PRP it)) (VP (VBZ 's) (RB not) (ADJP (RB entirely) (JJ memorable))))))
(ROOT (SBAR (IN ) (S (NP (PRP )) (VP (VBZ ) (RB ) (ADJP (RB ) (JJ ))))))