( ( ( THE CAUSE ) ( OF ( ( DAY AND ) NIGHT ) ) ) ( ( IS ( ( ( DUE ( TO ( THE ( EARTH 'S ) ) ) ) ROTATION ) ( -LRB- ( SPINNING -RRB- ) ) ) ) . ) )
(ROOT (S (NP (NP (DT THE) (NN CAUSE)) (PP (IN OF) (NP (NNP DAY) (CC AND) (NNP NIGHT)))) (VP (VBZ IS) (NP (NP (NP (NNP DUE) (NNP TO) (NNP THE) (NNP EARTH) (POS 'S)) (NN ROTATION)) (PRN (-LRB- -LRB-) (NP (NNP SPINNING)) (-RRB- -RRB-)))) (. .)))
THE CAUSE OF DAY AND NIGHT IS DUE TO THE EARTH'S ROTATION (SPINNING).
(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)))))) (. .)))