( Subject ( ( matter ( wherein ( ( the ( work function ) ) ( is ( performed ( by ( a ( magnetic ( chuck-type electromagnet ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Subject)) (VP (NN matter) (SBAR (WHADVP (WRB wherein)) (S (NP (DT the) (NN work) (NN function)) (VP (VBZ is) (VP (VBN performed) (PP (IN by) (NP (DT a) (JJ magnetic) (JJ chuck-type) (NN electromagnet)))))))) (. .)))
Subject matter wherein the work function is performed by a magnetic chuck-type electromagnet.
(ROOT (S (NP (DT The) (JJ long) (NN bone)) (VP (VBP work) (PP (IN as) (NP (NN lever)))) (. .)))