( ( Radio ( Waves ( and ( Frequency Allocations ) ) ) ) ; )
(ROOT (NP (NP (NNP Radio) (NNPS Waves) (CC and) (NNP Frequency) (NNP Allocations)) (: ;)))
Radio Waves and Frequency Allocations;
(ROOT (S (NP (NNP Am) (NN radio) (NNS waves)) (VP (VBP exist) (PRT (RP in)) (NP (DT the) (ADJP (QP (CD 540) (TO to) (CD 1600))) (NN khz) (NN frequency) (NN range))) (. .)))