( ( Describe ( ( ( ( ( ( ( the shape ) ( of ( an ( elliptical galaxy ) ) ) ) , ) ( ( the types ) ( of stars ) ) ) , ) and ) ( ( the amount ) ( of ( gas ( in ( ( this type ) ( of galaxy ) ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Describe) (NP (NP (NP (DT the) (NN shape)) (PP (IN of) (NP (DT an) (JJ elliptical) (NN galaxy)))) (, ,) (NP (NP (DT the) (NNS types)) (PP (IN of) (NP (NNS stars)))) (, ,) (CC and) (NP (NP (DT the) (NN amount)) (PP (IN of) (NP (NP (NN gas)) (PP (IN in) (NP (NP (DT this) (NN type)) (PP (IN of) (NP (NN galaxy)))))))))) (. .)))
Describe the shape of an elliptical galaxy, the types of stars, and the amount of gas in this type of galaxy.
(ROOT (S (NP (PRP You)) (VP (VBP call) (NP (NP (JJ egg-shaped) (NNS galaxies)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBP are) (ADJP (JJ reddish) (S (VP (TO to) (VP (VB yellowish) (PP (IN in) (NP (NN color))) (SBAR (IN because) (S (NP (PRP they)) (VP (VBP contain) (NP (NP (ADJP (RB mostly) (JJ old)) (NNS stars)) (, ,) (NP (JJ elliptical) (NNS galaxies))))))))))))))) (. .)))