i wonder how they kept up with them though it seemed like the buffaloes were moving so fast i guess they graze though that wouldn't have been a problem
( i ( wonder ( how ( they ( ( ( kept up ) ( with them ) ) ( though ( it ( seemed ( like ( ( the buffaloes ) ( were ( moving ( so ( fast ( i ( guess ( they ( graze ( though ( that ( ( would n't ) ( have ( been ( a problem ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) )
(ROOT (S (NP (FW i)) (VP (VBP wonder) (SBAR (WHADVP (WRB how)) (S (NP (PRP they)) (VP (VBD kept) (PRT (RP up)) (PP (IN with) (NP (PRP them))) (SBAR (IN though) (S (NP (PRP it)) (VP (VBD seemed) (SBAR (IN like) (S (NP (DT the) (NNS buffaloes)) (VP (VBD were) (VP (VBG moving) (ADVP (RB so) (RB fast) (SBAR (S (NP (FW i)) (VP (VBP guess) (SBAR (S (NP (PRP they)) (VP (VBP graze) (SBAR (IN though) (S (NP (DT that)) (VP (MD would) (RB n't) (VP (VB have) (VP (VBN been) (NP (DT a) (NN problem)))))))))))))))))))))))))))
I've never thought about how they kept up.
( I ( ( ( 've never ) ( thought ( about ( how ( they ( kept up ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP 've) (ADVP (RB never)) (VP (VBN thought) (PP (IN about) (SBAR (WHADVP (WRB how)) (S (NP (PRP they)) (VP (VBD kept) (PRT (RP up)))))))) (. .)))