watching a walk to remember 
(ROOT (S (VP (VBG watching) (NP (NP (DT a) (NN walk)) (SBAR (S (VP (TO to) (VP (VB remember)))))))))
(ROOT (S (VP (VBG ) (NP (NP (DT ) (NN )) (SBAR (S (VP (TO ) (VP (VB )))))))))