a superficial way , while never sure 
(ROOT (S (NP (DT a) (JJ superficial) (NN way)) (, ,) (SBAR (IN while) (S (ADVP (RB never)) (ADJP (JJ sure))))))
(ROOT (S (NP (DT ) (JJ ) (NN )) (, ) (SBAR (IN ) (S (ADVP (RB )) (ADJP (JJ ))))))