( ( The ( embryo sac ) ) ( ( is ( of ( the ( Fritillaria type ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN embryo) (NN sac)) (VP (VBZ is) (PP (IN of) (NP (DT the) (NNP Fritillaria) (NN type)))) (. .)))
The embryo sac is of the Fritillaria type.
(ROOT (S (NP (NP (DT The) (JJ amniotic) (NN sac)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBD was) (VP (VBG sitting) (PP (IN on) (NP (NP (NN top)) (PP (IN of) (NP (DT the) (JJ flat) (NN embryo))))))))) (, ,)) (VP (VBZ envelops) (NP (DT the) (NN embryo)) (SBAR (IN as) (S (NP (PRP it)) (VP (VBZ folds))))) (. .)))