( ( The equator ) ( ( ( is ( relatively hot ) ) ( because ( sunlight ( ( ( strikes Earth ) directly ) ( at ( that latitude ) ) ) ) ) ) ; ) )
(ROOT (S (NP (DT The) (NN equator)) (VP (VBZ is) (ADJP (RB relatively) (JJ hot)) (SBAR (IN because) (S (NP (NN sunlight)) (VP (VBZ strikes) (NP (NNP Earth)) (ADVP (RB directly)) (PP (IN at) (NP (DT that) (NN latitude))))))) (: ;)))
The equator is relatively hot because sunlight strikes Earth directly at that latitude;
(ROOT (S (NP (NP (DT The) (NN equator)) (PP (IN on) (NP (NN earth)))) (VP (VBZ receives) (NP (DT the) (ADJP (RBS most) (JJ direct)) (NN sunlight))) (. .)))
The equator on earth receives the most direct sunlight.