( ( Undigested food ) ( ( becomes ( ( solid waste ) ( that ( leaves ( through ( ( the anus ) ( in ( ( the form ) ( of feces ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Undigested) (NN food)) (VP (VBZ becomes) (NP (NP (JJ solid) (NN waste)) (SBAR (WHNP (WDT that)) (S (VP (VBZ leaves) (PP (IN through) (NP (NP (DT the) (NNS anus)) (PP (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (NNS feces)))))))))))) (. .)))
Undigested food becomes solid waste that leaves through the anus in the form of feces.
(ROOT (S (NP (JJ Solid) (NN waste)) (VP (VBZ is) (VP (VBN eliminated) (PP (IN from) (NP (DT the) (NN body))) (PP (IN through) (NP (DT the) (NNS anus))))) (. .)))