( ( ( The ( term alternation ) ) ( of generations ) ) ( ( is ( used ( to ( ( describe ( a process ) ) ( in ( ( the ( life cycle ) ) ( of ( some eukaryotes ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN term) (NN alternation)) (PP (IN of) (NP (NNS generations)))) (VP (VBZ is) (VP (VBN used) (S (VP (TO to) (VP (VB describe) (NP (DT a) (NN process)) (PP (IN in) (NP (NP (DT the) (NN life) (NN cycle)) (PP (IN of) (NP (DT some) (NNS eukaryotes)))))))))) (. .)))
The term alternation of generations is used to describe a process in the life cycle of some eukaryotes .
(ROOT (S (NP (NNP Life) (NN cycle)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (DT the) (NN span)) (PP (IN in) (NP (NP (DT the) (NN life)) (PP (IN of) (NP (NP (DT an) (NN organism)) (PP (IN from) (NP (NP (CD one) (NN generation)) (PP (TO to) (NP (DT the) (JJ next))))))))))))) (. .)))