( ( ( ( Infradian rhythm ) ( ( A ( biological rhythm ) ) ( with ( a cycle ) ) ) ) ( of ( ( more ( than 24 ) ) hours ) ) ) ; )
(ROOT (NP (NP (NN Infradian) (NN rhythm)) (NP (NP (DT A) (JJ biological) (NN rhythm)) (PP (IN with) (NP (DT a) (NN cycle)))) (PP (IN of) (NP (QP (JJR more) (IN than) (CD 24)) (NNS hours))) (: ;)))
Infradian rhythm A biological rhythm with a cycle of more than 24 hours;
(ROOT (S (NP (NP (JJ Regular) (NNS changes)) (PP (IN in) (NP (NN biology) (CC or) (NN behavior))) (SBAR (WHNP (WDT that)) (S (VP (VBP occur) (PP (IN in) (NP (DT a) (CD 24) (NN hour) (NN cycle))))))) (VP (VBP are) (NP (NP (NN part)) (PP (IN of) (NP (DT the) (NN circadian) (NN rhythm))))) (. .)))