But there is something you can do to help.
( But ( there ( ( is ( something ( you ( can ( do ( to help ) ) ) ) ) ) . ) ) )
(ROOT (S (CC But) (NP (EX there)) (VP (VBZ is) (NP (NP (NN something)) (SBAR (S (NP (PRP you)) (VP (MD can) (VP (VB do) (S (VP (TO to) (VP (VB help)))))))))) (. .)))
You can be of assistance. 
( You ( ( can ( be ( of assistance ) ) ) . ) )
(ROOT (S (NP (PRP You)) (VP (MD can) (VP (VB be) (PP (IN of) (NP (NN assistance))))) (. .)))