( ( In January ) ( , ( Carrier ( ( ( engaged ( ( 21 ( first graders ) ) ( in ( ( Judith ( Pooley 's ) ) class ) ) ) ) ( by ( investigating ( ( ( ( simple machines ) ( the lever ) ) , ) ( inclined ( plane ( , ( ( wedge and ) screw ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (NNP January))) (, ,) (NP (NN Carrier)) (VP (VBD engaged) (NP (NP (CD 21) (JJ first) (NNS graders)) (PP (IN in) (NP (NP (NNP Judith) (NNP Pooley) (POS 's)) (NN class)))) (PP (IN by) (S (VP (VBG investigating) (NP (NP (NP (JJ simple) (NNS machines)) (NP (DT the) (NN lever))) (, ,) (VP (VBN inclined) (NP (NN plane) (, ,) (NN wedge) (CC and) (NN screw)))))))) (. .)))
In January, Carrier engaged 21 first graders in Judith Pooley's class by investigating simple machines the lever, inclined plane, wedge and screw.
(ROOT (S (NP (DT A) (NN wedge)) (VP (VBZ is) (NP (NP (DT the) (NN name)) (PP (IN for) (NP (NP (DT a) (JJ simple) (NN machine)) (SBAR (WHNP (WDT that)) (S (VP (VBZ consists) (PP (IN of) (NP (CD two) (JJ inclined) (NNS planes)))))))))) (. .)))