( ( The collar ) ( ( beeps ( during ( ( daylight hours ) ( ( alone or ) ( both ( ( night and ) day ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN collar)) (VP (VBZ beeps) (PP (IN during) (NP (NP (NN daylight) (NNS hours)) (UCP (ADJP (RB alone)) (CC or) (NP (DT both) (NN night) (CC and) (NN day)))))) (. .)))
The collar beeps during daylight hours alone or both night and day.
(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)))))) (. .)))