( ( ( Names , ) ( ( ( ( ( ( ( ( distances , ) constellations ) , ) magnitudes ) , ) ( spectral types ) ) and ) positions ) ) . )
(ROOT (NP (NP (NNS Names)) (, ,) (NP (NP (NNS distances)) (, ,) (NP (NNS constellations)) (, ,) (NP (NNS magnitudes)) (, ,) (NP (JJ spectral) (NNS types)) (CC and) (NP (NNS positions))) (. .)))
Names, distances, constellations, magnitudes, spectral types and positions.
(ROOT (S (NP (NNP Distance)) (VP (VBZ is) (VP (VBN defined) (PP (IN as) (NP (NP (DT the) (NN magnitude) (CC or) (NN size)) (PP (IN of) (NP (NP (NN displacement)) (PP (IN between) (NP (CD two) (NNS positions))))))))) (. .)))