( ( Between ( the ( two ovaries ) ) ) ( , ( ( one ( mature egg ) ) ( ( is ( released ( during ( each ( normal ( menstrual cycle ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN Between) (NP (DT the) (CD two) (NNS ovaries))) (, ,) (NP (CD one) (JJ mature) (NN egg)) (VP (VBZ is) (VP (VBN released) (PP (IN during) (NP (DT each) (JJ normal) (JJ menstrual) (NN cycle))))) (. .)))
Between the two ovaries, one mature egg is released during each normal menstrual cycle.
(ROOT (S (NP (NP (DT The) (NN release)) (PP (IN of) (NP (NP (DT an) (NN egg)) (PP (IN from) (NP (DT an) (NN ovary)))))) (, ,) (VP (VBZ is) (NP (NP (NN part)) (PP (IN of) (NP (DT the) (JJ menstrual) (NN cycle))))) (. .)))