( It ( ( was ( the ( first ( moon ( to ( be ( discovered ( to ( have ( an atmosphere ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBD was) (NP (DT the) (JJ first) (NN moon) (S (VP (TO to) (VP (VB be) (VP (VBN discovered) (S (VP (TO to) (VP (VB have) (NP (DT an) (NN atmosphere))))))))))) (. .)))
It was the first moon to be discovered to have an atmosphere.
(ROOT (S (NP (CD One) (NN way) (SBAR (IN that) (S (NP (DT the) (NN moon)) (VP (VBZ is) (ADJP (JJ different) (PP (IN from) (NP (NN earth)))))))) (VP (VBZ is) (SBAR (IN that) (S (NP (DT the) (NN moon)) (VP (VBZ has) (NP (RB almost) (DT no) (NN atmosphere)))))) (. .)))