sentence1_binary_parse: ( ( ( ( Bi-concave lens ) , ) ( 90mm long ) ) ; )
sentence1_parse: (ROOT (NP (NP (JJ Bi-concave) (NN lens)) (, ,) (NP (CD 90mm) (RB long)) (: ;)))
sentence1: Bi-concave lens, 90mm long;
sentence2_parse: (ROOT (S (NP (DT A) (JJ concave) (NN lens)) (VP (VBZ is) (NP (NP (JJR thicker)) (PP (IN at) (NP (DT the) (NNS edges)))) (SBAR (IN than) (S (NP (PRP it)) (VP (VBZ is) (PP (IN in) (NP (DT the) (NN middle))))))) (. .)))
sentence2: A concave lens is thicker at the edges than it is in the middle.