( ( This clade ) ( ( is ( thought ( to ( be ( ( ( a ( sister group ) ) ( of ( ( another ( large clade ) ) called ) ) ) ( Lepidosauromorpha ( -LRB- incl ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT This) (NN clade)) (VP (VBZ is) (VP (VBN thought) (S (VP (TO to) (VP (VB be) (NP (NP (DT a) (JJ sister) (NN group)) (PP (IN of) (NP (NP (DT another) (JJ large) (NN clade)) (VP (VBN called)))) (NP (NNP Lepidosauromorpha) (-LRB- -LRB-) (NNP incl)))))))) (. .)))
This clade is thought to be a sister group of another large clade called Lepidosauromorpha (incl.
(ROOT (S (NP (DT A) (NN clade)) (VP (VBZ is) (NP (NP (CD one) (NN way)) (PP (IN of) (NP (VBG classifying) (NNS organisms))))) (. .)))