sentence1_binary_parse: ( Classifying stars )
sentence1_parse: (ROOT (NP (JJ Classifying) (NNS stars)))
sentence1: Classifying stars
sentence2_parse: (ROOT (S (NP (DT The) (NN sun)) (VP (VBZ is) (VP (VBN classified) (PP (IN as) (NP (DT a) (NN star))))) (. .)))
sentence2: The sun is classified as a star.