's a rather listless amble down 
(ROOT (SINV (VP (VBZ 's)) (NP (NP (DT a) (ADJP (RB rather) (JJ listless)) (NN amble)) (ADVP (RB down)))))
(ROOT (SINV (VP (VBZ )) (NP (NP (DT ) (ADJP (RB ) (JJ )) (NN )) (ADVP (RB )))))