( ( ( 40 ( solenoid ( and ( iron filings ) ) ) ) ( ( A solenoid ) is ) ) ( ( ( wound ( through ( ( a peice ) ( of ( plexiglass ( for use ) ) ) ) ) ) ( with ( ( iron filings ) ( on ( the ( overhead projector ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (CD 40) (NN solenoid) (CC and) (NN iron) (NNS filings)) (SBAR (S (NP (DT A) (NN solenoid)) (VP (VBZ is))))) (VP (VBD wound) (PP (IN through) (NP (NP (DT a) (NN peice)) (PP (IN of) (NP (NP (NNS plexiglass)) (PP (IN for) (NP (NN use))))))) (PP (IN with) (NP (NP (NN iron) (NNS filings)) (PP (IN on) (NP (DT the) (JJ overhead) (NN projector)))))) (. .)))
40 solenoid and iron filings A solenoid is wound through a peice of plexiglass for use with iron filings on the overhead projector.
(ROOT (S (NP (DT An) (NN electormagnet)) (VP (VBZ is) (NP (NP (DT a) (NN piece)) (PP (IN of) (NP (NP (NN iron)) (PP (IN inside) (NP (DT a) (NN solenoid))))))) (. .)))