( ( Channeling ( ( The term ) ( used ( to ( ( describe ( ( the concentration ) ( of flow ) ) ) ( through ( ( some areas ) ( of ( a filter ) ) ) ) ) ) ) ) ) ( , ( ( whilst ( ( other areas ) become ) ) ( blocked . ) ) ) )
(ROOT (S (S (VP (VBG Channeling) (NP (NP (DT The) (NN term)) (VP (VBN used) (S (VP (TO to) (VP (VB describe) (NP (NP (DT the) (NN concentration)) (PP (IN of) (NP (NN flow)))) (PP (IN through) (NP (NP (DT some) (NNS areas)) (PP (IN of) (NP (DT a) (NN filter)))))))))))) (, ,) (SBAR (IN whilst) (S (NP (JJ other) (NNS areas)) (VP (VBP become)))) (VP (VBD blocked)) (. .)))
Channeling The term used to describe the concentration of flow through some areas of a filter, whilst other areas become blocked.
(ROOT (S (NP (DT The) (NN term) (NN concentration)) (VP (VBZ describes) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (NP (NNS items)) (PP (IN in) (NP (NP (DT a) (VBN given) (NN area)) (CC or) (NP (NN volume)))))))) (. .)))