( ( Their ( life cycle ) ) ( ( is ( ( six months ) ( to ( four years ) ) ) ) . ) )
(ROOT (S (NP (PRP$ Their) (NN life) (NN cycle)) (VP (VBZ is) (NP (NP (CD six) (NNS months)) (PP (TO to) (NP (CD four) (NNS years))))) (. .)))
Their life cycle is six months to four years.
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (QP (CD four) (TO to) (CD six)) (NNS weeks)) (SBAR (S (VP (VBP are) (PP (IN in) (NP (NP (DT the) (NN life) (NN cycle)) (PP (IN of) (NP (NNS ladybugs)))))))))) (. .)))