( Wichmann ( ( is ( a ( bowl-shaped ( lunar ( impact crater ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Wichmann)) (VP (VBZ is) (NP (DT a) (JJ bowl-shaped) (NN lunar) (NN impact) (NN crater))) (. .)))
Wichmann is a bowl-shaped lunar impact crater.
(ROOT (S (NP (DT The) (NN lunar) (NN landscape)) (VP (VBZ is) (VP (VBN covered) (PP (IN by) (NP (NP (NNS craters)) (VP (VBN caused) (PP (IN by) (NP (JJ asteroid) (NNS impacts)))))))) (. .)))