( ( origin ( vs. ( the Earth ) ) ) ( ( ( ( ( 's ( surface directly ) ) ( above ( origin 2 ) ) ) -RRB- ) ( What ( ( two ( wave types ) ) ( are ( generated ( by earthquakes ) ) ) ) ) ) ? ) )
(ROOT (S (NP (NP (NN origin)) (PP (IN vs.) (NP (DT the) (NN Earth)))) (VP (VBZ 's) (ADVP (RB surface) (RB directly)) (PP (IN above) (NP (NN origin) (CD 2))) (-RRB- -RRB-) (SBAR (WHNP (WP What)) (S (NP (CD two) (NN wave) (NNS types)) (VP (VBP are) (VP (VBN generated) (PP (IN by) (NP (NNS earthquakes)))))))) (. ?)))
origin vs. the Earth's surface directly above origin 2) What two wave types are generated by earthquakes?
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD two) (NNS types)) (PP (IN of) (NP (NN surface) (NNS waves))))) (. .)))