( Picard ( ( is ( ( a ( lunar ( impact crater ) ) ) ( that ( lies ( in ( Mare Crisium ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Picard)) (VP (VBZ is) (NP (NP (DT a) (NN lunar) (NN impact) (NN crater)) (SBAR (WHNP (WDT that)) (S (VP (VBZ lies) (PP (IN in) (NP (NNP Mare) (NNP Crisium)))))))) (. .)))
Picard is a lunar impact crater that lies in Mare Crisium.
(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)))))))) (. .)))