( Also ( ( called ( a ( groin vault ) ) ) . ) )
(ROOT (SINV (ADVP (RB Also)) (VP (VBD called)) (NP (DT a) (NN groin) (NN vault)) (. .)))
Also called a groin vault.
(ROOT (S (NP (NP (DT A) (NN wall)) (PP (IN of) (NP (NP (NNS rocks)) (CC or) (NP (JJ concrete) (DT a))))) (VP (VBD called) (NP (DT a) (NN groin))) (. .)))