then by all means check it out . 
(ROOT (S (ADVP (RB then)) (PP (IN by) (NP (DT all) (NNS means))) (VP (VB check) (NP (PRP it)) (PRT (RP out))) (. .)))
(ROOT (S (ADVP (RB )) (PP (IN ) (NP (DT ) (NNS ))) (VP (VB ) (NP (PRP )) (PRT (RP ))) (. )))