( ( A watershed ) ( ( is ( all ( of ( ( ( ( the land ) ( that ( drains ( into ( ( a ( particular body ) ) ( of water ) ) ) ) ) ) , ) ( such ( as ( ( ( ( ( ( a river ) , ) lake ) , ) or ) ocean ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (NN watershed)) (VP (VBZ is) (NP (NP (DT all)) (PP (IN of) (NP (NP (DT the) (NN land)) (SBAR (WHNP (WDT that)) (S (VP (VBZ drains) (PP (IN into) (NP (NP (DT a) (JJ particular) (NN body)) (PP (IN of) (NP (NN water)))))))) (, ,) (PP (JJ such) (IN as) (NP (NP (DT a) (NN river)) (, ,) (NP (NN lake)) (, ,) (CC or) (NP (NN ocean)))))))) (. .)))
A watershed is all of the land that drains into a particular body of water, such as a river, lake, or ocean.
(ROOT (S (NP (NP (DT All)) (PP (IN of) (NP (NP (DT the) (NN land)) (VP (VBN drained) (PP (IN by) (NP (DT a) (NN river) (NN system))))))) (VP (VBZ is) (VP (VBN called) (NP (NP (PRP$ its) (NN basin)) (, ,) (CC or) (NP (DT the) (`` ``) (JJ wet) ('' '') (NN term) (NN watershed)))))))