( ( ( Pharynx & ) gills ) ( ( ( used only ) ( for ( filter feeding ) ) ) . ) )
(ROOT (S (NP (NNP Pharynx) (CC &) (NNP gills)) (VP (VBD used) (ADVP (RB only)) (PP (IN for) (NP (NN filter) (NN feeding)))) (. .)))
Pharynx &amp; gills used only for filter feeding.
(ROOT (S (NP (NNP Jaws) (CC and) (NN pharynx) (NNS muscles)) (VP (VBP are) (VP (VBN used) (S (VP (TO to) (VP (VB pump) (NP (NN water)) (PP (IN over) (NP (DT the) (NNS gills)))))))) (. .)))