( ( ( The types ) ( of waves ) ) ( ( ( ( ( used ( ( most often ) range ) ) ( from ( radio frequencies ) ) ) , ) ( similar ( to ( those ( ( ( used ( in ( FM radio ) ) ) , ) ( ( to ( microwaves ( like people ) ) ) ( cook with ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNS types)) (PP (IN of) (NP (NNS waves)))) (VP (VBD used) (ADJP (ADVP (RBS most) (RB often)) (NN range)) (PP (IN from) (NP (NN radio) (NNS frequencies))) (, ,) (S (ADJP (JJ similar) (PP (TO to) (NP (NP (DT those)) (VP (VBN used) (PP (IN in) (NP (JJ FM) (NN radio))) (, ,) (S (VP (TO to) (VP (NP (NNS microwaves)) (PP (IN like) (NP (NNS people))))) (VP (VB cook) (PP (IN with)))))))))) (. .)))
The types of waves used most often range from radio frequencies, similar to those used in FM radio, to microwaves like people cook with.
(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))) (. .)))