( ( Circannual ( Rhythm ( Circannual rhythm ) ) ) ( ( is ( ( the ( annual ( or ( yearly cycle ) ) ) ) ( used ( by ( all ( living things ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Circannual) (NNP Rhythm) (NNP Circannual) (NNP rhythm)) (VP (VBZ is) (NP (NP (DT the) (JJ annual) (CC or) (JJ yearly) (NN cycle)) (VP (VBN used) (PP (IN by) (NP (DT all) (VBG living) (NNS things)))))) (. .)))
Circannual Rhythm Circannual rhythm is the annual or yearly cycle used by all living things.
(ROOT (S (NP (JJ Circannual) (JJ behavioral) (NNS rhythms)) (VP (VBP are) (VP (VBN linked) (PP (TO to) (NP (NP (DT the) (JJ yearly) (NN cycle)) (PP (IN of) (NP (NNS seasons))))))) (. .)))