( ( ( ( ( The ( bone ice-skate ) ) , ) ( worked ( from ( ( the long-bone ) ( of ( the horse ) ) ) ) ) ) , ) ( ( was ( tied ( to ( the shoes ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN bone) (NN ice-skate)) (, ,) (VP (VBN worked) (PP (IN from) (NP (NP (DT the) (NN long-bone)) (PP (IN of) (NP (DT the) (NN horse)))))) (, ,)) (VP (VBD was) (VP (VBN tied) (PP (TO to) (NP (DT the) (NNS shoes))))) (. .)))
The bone ice-skate, worked from the long-bone of the horse, was tied to the shoes.
(ROOT (S (NP (DT The) (JJ long) (NN bone)) (VP (VBP work) (PP (IN as) (NP (NN lever)))) (. .)))