( ( ( The ( earth 's ) ) rotation ) ( ( causes ( ( day and ) night ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN earth) (POS 's)) (NN rotation)) (VP (VBZ causes) (NP (NN day) (CC and) (NN night))) (. .)))
The earth's rotation causes day and night.
(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)))))) (. .)))