he drags it back , single-handed . 
(ROOT (S (NP (PRP he)) (VP (VBZ drags) (NP (PRP it)) (ADVP (RB back)) (, ,) (S (ADJP (JJ single) (HYPH -) (JJ handed)))) (. .)))
(ROOT (S (NP (PRP )) (VP (VBZ ) (NP (PRP )) (ADVP (RB )) (, ) (S (ADJP (JJ ) (HYPH ) (JJ )))) (. )))