( ( Although ( Eros ( is ( a ( large ( S-type ( near-earth asteroid ) ) ) ) ) ) ) ( , ( it ( ( ( ( ( is still ) not ) massive ) ( enough ( for ( its ( own ( gravity ( to ( have ( ( shaped it ) ( into ( a ( planet-like ( spherical form ) ) ) ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN Although) (S (NP (NNP Eros)) (VP (VBZ is) (NP (DT a) (JJ large) (JJ S-type) (JJ near-earth) (NN asteroid))))) (, ,) (NP (PRP it)) (VP (VBZ is) (ADVP (RB still)) (RB not) (ADJP (JJ massive)) (ADVP (RB enough) (PP (IN for) (NP (PRP$ its) (JJ own) (NN gravity) (S (VP (TO to) (VP (VB have) (VP (VBN shaped) (NP (PRP it)) (PP (IN into) (NP (DT a) (JJ planet-like) (JJ spherical) (NN form))))))))))) (. .)))
Although Eros is a large S-type near-earth asteroid , it is still not massive enough for its own gravity to have shaped it into a planet-like spherical form.
(ROOT (S (NP (NNP High) (NNP gravity)) (VP (VBZ explains) (NP (NP (DT the) (JJ spherical) (NN shape)) (PP (IN of) (NP (NNS ceres)))) (, ,) (SBAR (IN once) (S (VP (VBD thought) (S (VP (TO to) (VP (VB be) (NP (DT the) (JJS largest) (NN asteroid))))))))) (. .)))