just because a walk to remember 
(ROOT (PP (ADVP (RB just)) (IN because) (NP (NP (DT a) (NN walk)) (SBAR (S (VP (TO to) (VP (VB remember))))))))
(ROOT (PP (ADVP (RB )) (IN ) (NP (NP (DT ) (NN )) (SBAR (S (VP (TO ) (VP (VB ))))))))