sentence1_binary_parse: ( Thick ( Lens ( Properties . ) ) )
sentence1_parse: (ROOT (NP (NNP Thick) (NNP Lens) (NNP Properties) (. .)))
sentence1: Thick Lens Properties.
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.