( ( ( ( ( Muscle Tissue ) ( of ( the ( animal body ) ) ) ) ( with ( ( the ability ) ( ( ( ( to contract ) , ) usually ) ( in response ) ) ) ) ) ( to ( ( a stimulus ) ( from ( the ( nervous system ) ) ) ) ) ) . )
(ROOT (NP (NP (NNP Muscle) (NNP Tissue)) (PP (IN of) (NP (DT the) (NN animal) (NN body))) (PP (IN with) (NP (NP (DT the) (NN ability)) (PP (PP (TO to) (NP (NN contract))) (, ,) (RB usually) (PP (IN in) (NP (NN response)))))) (PP (TO to) (NP (NP (DT a) (NN stimulus)) (PP (IN from) (NP (DT the) (JJ nervous) (NN system))))) (. .)))
Muscle Tissue of the animal body with the ability to contract, usually in response to a stimulus from the nervous system.
(ROOT (S (NP (NNS Muscles)) (VP (VBP need) (NP (NN stimulus)) (PP (TO to) (NP (NN contract)))) (. .)))