( E ( ( ach month ) ( ( during ( the ( menstrual cycle ) ) ) ( ( an egg ) ( ( is ( released ( from ( one ovary ) ) ) ) . ) ) ) ) )
(ROOT (S (NP (NNP E)) (NP (JJ ach) (NN month)) (PP (IN during) (NP (DT the) (JJ menstrual) (NN cycle))) (NP (DT an) (NN egg)) (VP (VBZ is) (VP (VBN released) (PP (IN from) (NP (CD one) (NN ovary))))) (. .)))
E ach month during the menstrual cycle an egg is released from one ovary.
(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))))) (. .)))