( ( In ( the ( Northern ( Hemisphere summer ) ) ) ) ( , ( ( ( the ( land north ) ) ( of ( the equator ) ) ) ( ( is ( ( ( tilted ( towards ( the sun ) ) ) , ) ( allowing ( ( more ( of ( the sun ) ) ) ( s ( energy ( to ( heat ( the ( Northern Hemisphere ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (DT the) (NNP Northern) (NNP Hemisphere) (NN summer))) (, ,) (NP (NP (DT the) (NN land) (NN north)) (PP (IN of) (NP (DT the) (NN equator)))) (VP (VBZ is) (VP (VBN tilted) (PP (IN towards) (NP (DT the) (NN sun))) (, ,) (S (VP (VBG allowing) (SBAR (S (NP (NP (JJR more)) (PP (IN of) (NP (DT the) (NN sun)))) (VP (VBZ s) (NP (NN energy) (S (VP (TO to) (VP (VB heat) (NP (DT the) (NNP Northern) (NNP Hemisphere))))))))))))) (. .)))
In the Northern Hemisphere summer, the land north of the equator is tilted towards the sun, allowing more of the sun s energy to heat the Northern Hemisphere.
(ROOT (S (NP (NP (DT The) (NN tilt)) (PP (IN of) (NP (NP (NN earth)) (PP (IN on) (NP (PRP$ its) (NNS axis)))))) (VP (VBZ causes) (NP (NN summer)) (S (VP (TO to) (VP (VB be) (VP (VBN warmer) (PP (IN than) (NP (NP (NN winter)) (PP (IN in) (NP (DT the) (JJ northern) (NN hemisphere))))) (SBAR (IN because) (S (NP (NP (DT the) (NNS rays)) (PP (IN of) (NP (DT the) (NN sun)))) (VP (VBP strike) (NP (DT the) (JJ northern) (NN hemisphere)) (ADVP (ADVP (RBR more) (RB directly)) (PP (IN in) (NP (DT the) (NN summer)))))))))))) (. .)))