( ( A ( horizontal ( sedimentary-rock formation ) ) ) ( ( called ( ( the ( Kaibab Limestone ) ) ( underlies ( the ( entire region ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (JJ horizontal) (JJ sedimentary-rock) (NN formation)) (VP (VBD called) (SBAR (S (NP (DT the) (NNP Kaibab) (NNP Limestone)) (VP (VBZ underlies) (NP (DT the) (JJ entire) (NN region)))))) (. .)))
A horizontal sedimentary-rock formation called the Kaibab Limestone underlies the entire region.
(ROOT (S (NP (NP (DT A) (VBG defining) (NN feature)) (PP (IN of) (NP (JJ deformed) (NN sedimentary) (NNS rocks)))) (VP (VBZ is) (SBAR (IN that) (S (NP (PRP they)) (VP (VBP are) (RB not) (ADJP (JJ horizontal)))))) (. .)))