( ( At ( the equinox ) ) ( , ( ( ( ( ( about ( September 22 ) ) ( , ( ( the Sun ) ( ( is directly ) ( over ( the equator ) ) ) ) ) ) and ) ( , ( ( for ( ( all parts ) ( of ( the Earth ) ) ) ) ( , ( ( the Sun ) ( ( rises directly ) ( in ( ( the ( ( east and ) sets ) ) ( in ( the west ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (PP (IN At) (NP (DT the) (NNS equinox))) (, ,) (S (PP (IN about) (NP (NNP September) (CD 22))) (, ,) (NP (DT the) (NNP Sun)) (VP (VBZ is) (ADVP (RB directly)) (PP (IN over) (NP (DT the) (NN equator))))) (CC and) (S (, ,) (PP (IN for) (NP (NP (DT all) (NNS parts)) (PP (IN of) (NP (DT the) (NN Earth))))) (, ,) (NP (DT the) (NNP Sun)) (VP (VBZ rises) (ADVP (RB directly)) (PP (IN in) (NP (NP (DT the) (JJ east) (CC and) (NNS sets)) (PP (IN in) (NP (DT the) (NN west))))))) (. .)))
At the equinox, about September 22, the Sun is directly over the equator and, for all parts of the Earth, the Sun rises directly in the east and sets in the west.
(ROOT (S (NP (DT The) (NN sun)) (VP (VBZ is) (ADVP (RB directly)) (PP (IN over) (NP (DT the) (NN equator))) (PP (IN during))) (. .)))