( ( ( knows ( ways systems ) ) ( in ( ( ( an ( organism ( ( function and ) interact ) ) ) ( -LRB- ( ( for example ) ( , ( ( the ( muscular system ) ) ( ( ( provides ( the ( ability ( to move ) ) ) ) and ) ( is ( supported ( by ( the ( skeletal system ) ) ) ) ) ) ) ) ) ) ) ( when ( one ( is present ) ) ) ) ) ) . )
(ROOT (S (VP (VBZ knows) (NP (NNS ways) (NNS systems)) (PP (IN in) (NP (NP (DT an) (NN organism) (NN function) (CC and) (NN interact)) (PRN (-LRB- -LRB-) (PP (IN for) (NP (NN example))) (, ,) (NP (NP (DT the) (JJ muscular) (NN system)) (SBAR (S (VP (VP (VBZ provides) (NP (DT the) (NN ability) (S (VP (TO to) (VP (VB move)))))) (CC and) (VP (VBZ is) (VP (VBN supported) (PP (IN by) (NP (DT the) (JJ skeletal) (NN system)))))))))) (SBAR (WHADVP (WRB when)) (S (NP (PRP one)) (VP (VBZ is) (ADJP (JJ present)))))))) (. .)))
knows ways systems in an organism function and interact (for example, the muscular system provides the ability to move and is supported by the skeletal system when one is present.
(ROOT (S (ADVP (RB Together)) (, ,) (NP (DT the) (JJ muscular) (CC and) (JJ skeletal) (NNS organs)) (VP (VBP are) (VP (VBN known) (PP (IN as) (NP (DT the) (JJ musculoskeletal) (NN system))))) (. .)))
Together, the muscular and skeletal organs are known as the musculoskeletal system.