( ( Areas ( of concentration ) ) ( ( include ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( number theory ) , ) expression ) , ) equations ) , ) measurement ) , ) ratios ) , ) percents ) , ) geometry ) , ) perimeters ) , ) area ) , ) volume ) , ) statistics ) , ) probabilities ) , ) and ) integers ) ) . ) )
(ROOT (S (NP (NP (NNS Areas)) (PP (IN of) (NP (NN concentration)))) (VP (VBP include) (NP (NP (NN number) (NN theory)) (, ,) (NP (NN expression)) (, ,) (NP (NNS equations)) (, ,) (NP (NN measurement)) (, ,) (NP (NNS ratios)) (, ,) (NP (NNS percents)) (, ,) (NP (NN geometry)) (, ,) (NP (NNS perimeters)) (, ,) (NP (NN area)) (, ,) (NP (NN volume)) (, ,) (NP (NNS statistics)) (, ,) (NP (NNS probabilities)) (, ,) (CC and) (NP (NNS integers)))) (. .)))
Areas of concentration include number theory, expression, equations, measurement, ratios, percents, geometry, perimeters, area, volume, statistics, probabilities, and integers.
(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)))))))) (. .)))