( ( Causes ( of ( ( Day ( and ( Night Speed ) ) ) ( of ( Rotation ( The Earth ) ) ) ) ) ) ( ( rotates ( on ( its ( own axis ) ) ) ) . ) )
(ROOT (S (NP (NP (NNS Causes)) (PP (IN of) (NP (NP (NNP Day) (CC and) (NNP Night) (NNP Speed)) (PP (IN of) (NP (NNP Rotation) (NNP The) (NNP Earth)))))) (VP (VBZ rotates) (PP (IN on) (NP (PRP$ its) (JJ own) (NNS axis)))) (. .)))
Causes of Day and Night Speed of Rotation The Earth rotates on its own axis .
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (QP (JJR fewer) (IN than) (CD 24)) (NNS hours)) (PP (IN of) (NP (NP (NN daylight)) (PP (IN in) (NP (NN alaska)))))) (PP (IN during) (NP (NP (DT each) (NN day)) (PP (IN in) (NP (NNP april))))) (SBAR (IN because) (S (NP (NP (NN earth) (POS 's)) (NN rotation)) (VP (VBZ causes) (NP (DT both) (NN day) (CC and) (NN night)))))) (. .)))