( ( Depth ( contour lines ) ) ( ( show ( ( the shape ) ( of ( underwater relief ) ) ) ) . ) )
(ROOT (S (NP (JJ Depth) (NN contour) (NNS lines)) (VP (VBP show) (NP (NP (DT the) (NN shape)) (PP (IN of) (NP (JJ underwater) (NN relief))))) (. .)))
Depth contour lines show the shape of underwater relief.
(ROOT (S (NP (NNP Contour) (NNS lines)) (VP (VBP show) (NP (NP (DT the) (JJ three-dimensional) (NN shape)) (PP (IN of) (NP (NN land))))) (. .)))